1
Copyright © 2015 Science Olympiad Foundation. Printed with the permission of Science Olympiad Foundation. No part
of this publication may be reproduced, transmitted, in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior permission of the copyright holder. Ownership of an ebook does not give the possessor the ebook copyright. All disputes subject to Delhi jurisdiction only.
Disclaimer : The information in this book is to give you the path to success but it does not guarantee 100% success as the strategy is completely dependent on its execution. And it is based on last years papers of NSO exam.
Published by : MTG Learning Media (P) Ltd. Corporate Office : Plot 99, 2nd Floor, Sector 44 Institutional Area, Gurgaon, Haryana. Phone : 0124 - 4951200 Web: mtg.in Email:
[email protected] Regd. Office : 406, Taj Apt., Ring Road, Near Safdarjung Hospital, New Delhi-110029
Visit
www.mtg.in for buying books online.
CLASS 10
Contents ªª 13th NSO 2010 ªª 14th NSO 2011 ªª 15th NSO 2012 - SET A ªª 15th NSO 2012 - SET B ªª 16th NSO 2013 - SET A ªª 16th NSO 2013 - SET B ªª 17th NSO 2014 - SET A ªª 17th NSO 2014 - SET B
MTG Work-Books / olympiad books CLASS 1
International Mathematics Olympiad
National Science Olympiad
International English Olympiad
MTG CSS Series
CLASS 2
International Mathematics Olympiad
National Science Olympiad
National Cyber Olympiad
International English Olympiad
MTG CSS Series
International English Olympiad
MTG CSS Series
CLASS 3
International Mathematics Olympiad
National Science Olympiad
National Cyber Olympiad
MTG Work-Books / olympiad books CLASS 4
International Mathematics Olympiad
National Science Olympiad
National Cyber Olympiad
International English Olympiad
MTG CSS Series
International English Olympiad
MTG CSS Series
International English Olympiad
MTG CSS Series
CLASS 5
International Mathematics Olympiad
National Science Olympiad
National Cyber Olympiad
CLASS 6
International Mathematics Olympiad
National Science Olympiad
National Cyber Olympiad
MTG Work-Books / olympiad books CLASS 7
National Science Olympiad
International Mathematics Olympiad
National Cyber Olympiad
Science IQ Challenge
Math IQ Challenge
International English Olympiad
MTG CSS Series
Master Mental Ability in 30 Days
CLASS 8
International Mathematics Olympiad
National Science Olympiad
National Cyber Olympiad
International English Olympiad
MTG CSS Series
Math IQ Challenge
Science IQ Challenge
Psychology of Success
The Secrets of SUCCESS
Master Mental Ability in 30 Days
MTG Work-Books / olympiad books CLASS 9
International Mathematics Olympiad
Math IQ Challenge
National Science Olympiad
Science IQ Challenge
National Cyber Olympiad
Psychology of Success
The Secrets of SUCCESS
International English Olympiad
Master Mental Ability in 30 Days
CLASS 10
International Mathematics Olympiad
Math IQ Challenge
National Science Olympiad
Science IQ Challenge
National Cyber Olympiad
Psychology of Success
The Secrets of SUCCESS
International English Olympiad
Master Mental Ability in 30 Days
MTG Work-Books / olympiad books CLASS 11
International Mathematics Olympiad
Math IQ Challenge
Science IQ Challenge
National Science Olympiad
Psychology of Success
National Cyber Olympiad
The Secrets of SUCCESS
Master Mental Ability in 30 Days
CLASS 12
International Mathematics Olympiad
Math IQ Challenge
Science IQ Challenge
National Science Olympiad
Psychology of Success
National Cyber Olympiad
The Secrets of SUCCESS
Master Mental Ability in 30 Days
Class
1 to 10
JEE (Main & Advanced) | AIPMT | BOARDS | OLYMPIAD | NTSE
FOUNDATION COURSE For Classes 7, 8, 9 & 10 Class 7
Class 8
Class 9
Class 10
Class 10 13th
Year 2010
Copyright©2015. Science Olympiad Foundation (SOF)
CLASS 10 | 13th NSO -- 2010
MENTAL ABILITY 1.
A triangle has sides 8 cm, 17 cm and 15 cm. The area of the triangle is ________ (A) 50 cm 2
2.
(B) 68 cm 2
(C) 40 cm 2
(D) 60 cm 2 A
In the adjoining figure, if BO and CO are the bisectors of ÐEBC & ÐDCB respectively the value of ÐBOC is ________ (A) 60°
(B) 120°
(C) 30°
(D) 90°
60° B 70° 1
C
2
E
D O
A
3.
What is the area of a right angled triangle if the radius of its circumcircle is 3 cm and altitude drawn to the hypotenuse is 2 cm? (A) 4 3 cm 2 (C) 7 cm 2
4.
9.
(C) 27 cm
(D) 30 cm
(B) 5a + b = 0
(C) a – 5b = 0
(D) 5a – b = 0
(B) –2 3
C.
D.
3 3 n< 4 3 3 n< . 8
21. Match the Column I with Column II.
Column I Column II (a) Geothermal energy (i) Obtained from the splitting of atom (b) Nuclear energy (ii) Obtained from the interior of earth (c) Biomass energy (iii) Obtained from the decay of organic matter. A. (a)-(i), (b)-(iii), (c)-(ii) B. (a)-(ii), (b)-(i), (c)-(iii) C. (a)-(iii), (b)-(ii), (c)-(i) D. (a)-(i), (b)-(ii), (c)-(iii)
22. An electric current runs counterclockwise in a rectangular loop around the outside edge of the page which lies flat on your table. A uniform magnetic field is then turned on, directed parallel to the page from the top to bottom. The magnetic force on the page will cause A. The left edge to lift up B. The right edge to lift up C. The top edge to lift up D. The bottom edge to lift up.
23. A sound is played on a flute. A sound of same pitch is played on a trumpet, then the frequency and speed of two sound waves respectively at the same place are A. Different, different B. Same, same C. Different, same D. Same, different 24. Study the given circuit. At which point is the value of current smallest?
A. B. C. D.
P and Q Q only P and R S only
25. The diagram shows the paths
of two rays of light from an object. The object is 10 cm in front of a lens as shown in the diagram. Which of the following statements is true about the given diagram?
A.
B.
C.
D.
The lens is converging and focal length of lens is greater than 10 cm. The lens is converging and focal length of lens is less than 10 cm. The lens is diverging and focal length of lens is greater than 10 cm. The lens is diverging and focal length of lens is less than 10 cm.
26. Vivek was given few models of atoms representing their structures. He was asked to choose one pair of isotopes and one pair of isobars.
17p 18n
18p 22n
(i)
(ii)
17p 20n
20p 20n
(iii) (iv) Which of the following options contains the correct pairs? Isotopes Isobars A. (i) and (ii) (iii) and (iv) B. (i) and (iv) (ii) and (iii) C. (i) and (iii) (ii) and (iv) D. (i) and (iii) None
Copyright©2015. Science Olympiad Foundation (SOF)
16th NSO - SET A
4
27. Four metals P, Q, R and S are tested with water, steam and dilute hydrochloric acid. The table given below shows the results of the experiment. Metals
Reaction with Reaction Reaction with water with steam dil. HCl ×
P
× × × × × Between which two metals should hydrogen be placed in the series? A. P and Q B. Q and S C. P and R D. R and S Q R S
28. An experimental set up is shown in the figure. Identify the metal X and gas Y respectively in the figure. Metal X Y gas
Glass wool soaked with water
Water Gas jar
Burner
A. C.
Zinc, H2 gas Aluminium, CO2 gas
B. D.
30. The states of matter depending upon the interparticle distances are shown in the following diagram.
The A. B. C. D.
c,d
conditions a, b, c, d are a b c Increase Decrease Increase heat pressure heat Increase Increase Decrease heat pressure heat Decrease Increase Increase heat pressure heat Decrease Increase Decrease heat pressure heat
a.
Column I Column II CaO + H2O → (i) Decomposition Ca(OH)2 reaction
b.
2FeSO4 Heat (ii) Redox reaction Fe2O3 + SO2 + SO3
c.
Al + 3AgNO3 → (iii) Combination reaction Al(NO3)3 + 3Ag
d.
2H2S + SO2 → (iv) Displacement reaction 2H2O + 3S
A. B. C. D.
a-(i), b-(iii), c-(ii), d-(iv) a-(iii), b-(i), c-(iv), d-(ii) a-(ii), b-(iv), c-(i), d-(iii) a-(iv), b-(ii), c-(iii), d-(i)
32. A metal rod M was dipped in a coloured solution Y. After some time it was observed that the metal rod starts dissolving in the solution and the solution starts fading in colour. However, a coloured precipitate Z was seen at the bottom of the beaker. M, Y and Z could be
Copper, CO2 gas Platinum, H2 gas
29. The mass of few entities are mentioned in the column II. Match the two columns and mark the correct option from the codes given below. Column I Column II a. 10 moles of Na2SO3 (i) 124.5 g b. 1.5 moles of Na (ii) 34.5 g c. 1.5 × 1023 molecules of NH3 (iii) 1260 g d. 0.5 mole of CuSO4·5H2O (iv) 4.23 g A. a-(iii), b-(ii), c-(iv), d-(i) B. a-(i), b-(ii), c-(iii), d-(iv) C. a-(ii), b-(iv), c-(i), d-(iii) D a-(iv), b-(i), c-(ii), d-(iii)
a,b
31. Match the reactions given in column I with the type of reactions given in column II and mark the correct option from the codes given below.
d Decrease pressure Decrease pressure Decrease pressure Increase pressure
M Y
A. B. C. D.
M M M M
= Zn, = Cu, = Ag, = Fe,
Y Y Y Y
Z
= FeSO4, = Al2(SO4)3, = CuSO4, = ZnSO4,
Z Z Z Z
= Fe = Al = Cu = Zn
33. P is produced by the action of chlorine on dry slaked lime. Q is a non-corrosive base and used for faster cooking. On heating R at 373 K, it becomes calcium sulphate hemihydrate. Identify P, Q and R respectively.
A. B. C. D.
CaOCl2 , NaHCO3, gypsum CaO, Na2CO3, CaOCl2 Ca(OH)2 , NaHCO3, CaSO4 CaOCl2 , Na2CO3, NH4Cl
34. An element X belongs to group 2 and period 3 of the periodic table. The chemical formulae of its nitrate, sulphate and phosphate respectively will be
A. B. C. D.
X(NO3)2 , X NO3, X3(NO3)2 , X(NO3)3,
Copyright©2015. Science Olympiad Foundation (SOF)
XSO4, XSO4, X2(SO4)2 , X2(SO4)3,
X3(PO4)2 XPO4 X2(PO4)3 X2(PO4)3
16th NSO - SET A
5
35. A drop of a sample of food colouring (X ) and four dyes (P, Q, R and S) are put onto a chromatography paper. The four dyes are banned because they are not safe to consume.
X
P
Q
R
A. B. C. D.
X contains P and Q dyes. Dyes P and S are mixtures of two different dyes. X contains R dye. Dyes P and R are pure.
36. Refer to the given flow chart for kingdom Plantae. Plant body is differentiated into No X true roots, stem and leaves Yes No Plants possess seeds Y Yes
C.
D.
S
Study the given chromatogram carefully and choose the correct statement among the following.
Z Select the correct statement regarding X, Y and Z. A. X can be thallophytes such as algae and fungi. B. Y can be bryophytes or pteridophytes. C. Y can be cryptogams such as pteridophytes. D. Z can be angiosperms only.
39. Read the given statements and select the correct option. Statement 1 : The trees that are present on road sides, usually do not show the growth of lichens. Statement 2 : Lichens are very sensitive to the levels of contaminants like SO2 present in air. A. Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1. B. Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1. C. Statement 1 is true and statement 2 is false. D. Both statements 1 and 2 are false. 40. Study the given pedigree chart. The disease is caused by a recessive allele t and T is the dominant allele for normal condition.
A.
B.
C.
D.
Walls of the arteries are elastic, enabling them to stretch and contract with changes in blood pressure. Blood pressure in the veins is normally too low for blood to return to the heart without the action of skeletal muscles. Because of their small size, the blood in capillaries move more quickly than in other parts of circulatory system. Veins are typically larger in diameter than the arteries.
Key
I 1
Normal female
2
Normal male
II 1
37. Which of the following statements is incorrect?
the tissue is referred to as ciliated columnar epithelium. In mucous membrane of stomach, these cells develop mucus secreting cells called goblet cells and the tissue is referred to as glandular columnar epithelium. In the nephrons of kidneys, these cells possess cilia which keep the urine moving and the tissue is called as ciliated columnar epithelium.
Diseased female
2
Diseased male
III 1
2
3
Work out the genotypes of individuals from the given pedigree chart and select the correct option.
A. B. C. D.
I-2 Tt TT Tt tt
II-1 tt tt tt Tt
III-2 Tt Tt TT Tt
41. Given figure shows a part of the food web in terrestrial ecosystem.
38. Identify the given type of animal tissue and select the incorrect statement regarding this.
A.
B.
In the intestinal mucosa, these cells possess microvilli to increase the absorptive surface area and the tissue is called as brush- bordered columnar epithelium. In Fallopian tubes of females, these cells possess cilia for the movement of ovum/zygote and
Which of the following correctly represents pyramid of energy based on the given food web? A. C.
Copyright©2015. Science Olympiad Foundation (SOF)
B.
D.
16th NSO - SET A
6
42. Refer the given experi mental set-up in which a ring of bark alongwith the phloem is removed from the stem and select the incorrect statement regarding this.
A.
B. C.
D.
Swelling of the stem occurs above the ring due to accumulation of nutrients. Downward translocation of food is blocked. Roots are starved and killed first due to non-availability of food. The experiment demonstrates that phloem is responsible for upward conduction of water and minerals.
43. Match different hormones given in Column-I with their respective functions given in Column-II and select the correct option from codes given below. a.
Column-I Column-II Luteinizing (i) Regulates calcium and hormone (LH) phosphate levels in blood b. Thyroxine (ii) Stimulates the rate of cellular oxidation and metabolism c. Oxytocin (iii) Stimulates the secretion of male sex hormones
d. Parathyroid (iv) Stimulates contraction of hormone (PTH) smooth muscles at the time of child birth A. a-(iii), b-(ii), c-(i), d-(iv) B. a-(iii), b-(ii), c-(iv), d-(i) C. a-(iv), b-(ii), c-(i), d-(iii) D. a-(i), b-(iii), c-(ii), d-(iv) 44. Which of the following is not an example of natural method of vegetative propagation in plants? A. Roots in case of sweet potato and Dahlia B. Stem in case of potato and ginger C. Leaves in case of Bryophyllum and Kalanchoe D. Stem in case of rose and sugarcane 45. Which of the following statements correctly describes the light reactions and dark reactions taking place during photosynthesis?
(i)
Light reactions occur in grana thylakoids whereas dark reactions occur in stroma of chloroplasts. (ii) Light reactions generate ATP and NADPH2 whereas dark reactions consume ATP and NADPH2. (iii) Oxygen is released as a by-product during the light reactions as well as dark reactions. (iv) Light reactions take place in the presence of light and dark reactions are independent of the products formed during light reactions. A. (i) and (ii) B. (iii) and (iv) C. (i), (ii) and (iv) D. (ii), (iii) and (iv)
Achievers Section Direction (Q. 46 & 47) : Refer the given reactions and answer the following questions. X
Hot conc. H2SO4
CH3CH2OH
Alk. KMnO4
Y
+Y Z
46. Identify X, Y and Z respectively.
A. B. C. D.
CH3COOH, CH2 — — CH2 , CH3COOCH3 CH2 — — CH2 , CH3COOH, CH3COOCH2CH3 HCHO, CH3CH3, CH3CH2COOH CH3CH3, HCHO, CH3COOH
47. What are the types of reactions occurring in the formation of X, Y and Z respectively?
A. B. C. D.
Oxidation, Reduction, Substitution Substitution, Esterification, Dehydration Reduction, Substitution, Oxidation Dehydration, Oxidation, Esterification
48. Read the following statements. (a) Allergy is caused due to _____ response of immune system towards foreign antigens. (b) Syphilis and gonorrhoea are the sexually transmitted diseases, which are caused by ______. (c) Down's syndrome and Klinefelter's syndrome are the (i) diseases, which are caused by (ii) . (d) Penicillin is a ______ antibiotic, which inhibits the growth of a number of bacterial pathogens by blocking the metabolic processes which build the cell wall in bacteria. Select the correct fill-ups for any two of the above statements. A. (a) Exaggerated (d) Narrow-spectrum B. (b) Bacteria (c) (i) Congenital (ii) Chromosomal mutations C. (c) (i) Acute (ii) Chromosomal mutations (d) Broad-spectrum D. (a) Hypersensitive (b) Protozoans
Copyright©2015. Science Olympiad Foundation (SOF)
16th NSO - SET A
7
49. The position-time graph of a particle of mass 40 g is shown here. Which of the following statement is true about the graph?
A.
B.
C.
D.
The particle 8 × 10–4 kg m s–1 The particle 8 × 10–4 kg m s–1 The particle 4 × 10–4 kg m s–1 The particle 4 × 10–4 kg m s–1
receives after every receives after every receives after every receives after every
an 1 s. an 2 s. an 1 s. an 2 s.
impulse of impulse of impulse of impulse of
50. Refer the given diagrammatical sections of mitochondrion (i) and chloroplast (ii), in which some of the parts have been incorrectly labelled. Identify them and select the correct option.
A. B. C. D.
(i) 80 S ribosomes Oxysomes Mitochondrial DNA 80 S ribosomes
SPACE FOR ROUGH WORK
Copyright©2015. Science Olympiad Foundation (SOF)
(ii) Grana thylakoids Grana thylakoids Chloroplast DNA Stroma
Class 10 16th
SET B Year 2013
Copyright©2015. Science Olympiad Foundation (SOF)
Mental Ability 1.
2.
Two dice are thrown simultaneously. Find the probability of getting a multiple of 2 on first dice and a multiple of 3 on the second dice. 4 A. 6 2 B. 6 1 C. 6 1 D. 36 In a village there are 30% educated people and 60% of total population is females. If there are 20% educated females and shaded portion in the diagram is educated population, which of the figures will best describe the situation.
A. B. C. D.
3.
If sinq + cosq = x, then sin6q + cos6q =
A.
B.
C.
D.
4.
Five executives — A, B, C, D and E of a European Corporation hold a conference in Rome: (i) A converses in Spanish and Italian. (ii) B converses in Spanish and English. (iii) C converses in English and Italian. (iv) D converses in French and Spanish. (v) E, a native Italian, can also converse in French.
One number is chosen from numbers 1 to 200. Find the probability that it is divisible by 4 and 6 both.
A.
B.
C.
D.
6.
There is a question below followed by two statements. Read the question carefully and choose which of the statements I and II is/are necessary?
I.
7.
4 − 3( x 2 − 1)2 4
4 − 3( x 2 + 1)2 4 3 − 4( x 2 − 1)2 4 3 − 4( x 2 + 1)2 4
8.
Which of the following, can act as an interpreter when C and D wish to confirm? A. A only B. B only C. None of A, B and E D. Any of the other three executives
17 200 67 200 31 200 None of these
Who is the father of D if A and B are the sons of D?
R Q S P
5.
9.
C is the brother of A and the son of E.
II. F is the mother of D. A. Only I B. Only II C. Neither I nor II D. I and II both Fill in the blanks. Every composite number can be expressed as a product of _______ , and this factorization is unique except for the order in which the prime factors occur. A. Co-primes B. Twin primes C. Primes D. All of these The diagram shows the net of the right cylinder. Find the volume of the cylinder, in cm3. 20 A. π 50 B. π 25 C. π D. 40 p There are some numbers in a matrix that follow a certain rule row-wise or column-wise. Identify the number, which will replace the question mark? A. 12 4 7 5 B. 13 40 88 54 C. 11 8 ? 9 D. 10
Copyright©2015. Science Olympiad Foundation (SOF)
16th NSO - SET B
2
10. If l the last term, d the common difference and 's' the sum of n terms (n ≠ 1) and 'a' the first term of an A.P. be connected by the equation 8ds = (d + 2l)2, then d = A. 2a B. a C. 3a D. 4a x 1 y 1 −z 1 = , = , = , then the 2 7+ 5 2 5+ 3 4 3+ 7 value of x3 + y3 + z3 – 2xyz is
11. If
A.
4 5 − 2 7 + 12 3
B.
−2 7 + 4 5 − 12 3
C.
2 7 − 4 5 − 12 3
D.
2 3+2 7 −4 5
A. B. C. D.
4:9 9 : 16 16 : 9 9 : 4
14. In a certain code language if GOD is coded as 6 – 8 – 14 – 16 – 3 – 5, then BEN is coded as A. 1 – 3 – 4 – 6 – 13 – 15 B. 1 – 2 – 4 – 6 – 13 – 15 C. 1 – 3 – 4 – 5 – 13 – 15 D. 1 – 3 – 4 – 6 – 14 – 25 15. The following data gives the distribution of total household expenditure (in rupees) of manual workers in a city:
12. Study the following arrangement of letters and digits carefully. Hence, answer the question given below it. N P D FA I G L O 4 K W C R N 9 X U Q F J 7 M N 3 4 T If starting from F every 4th element (including F) is replaced by the successive names of the days of the week starting with Sunday then which will be the position of Thursday from your right? A. 19th B. 16th th C. 8 D. 9th 13. In the given figure, LM || NQ and LN || PQ. If 1 MP = MN , find the ratio of areas of DLMN and 3 DQNP.
Expenditure Frequency Expenditure Frequency (in `) (in `)
1000-1500
24
3000-3500
30
1500-2000
40
3500-4000
22
2000-2500
33
4000-4500
16
2500-3000
28
4500-5000
7
Find the average expenditure which is being done by the maximum number of manual workers. A. 1500 B. 1660.896 C. 1647.826 D. 1847.826
Science 16. A fisherman is standing on the bank of a lake. To a fish under water, viewing obliquely the man looks A. Taller than what he actually is B. Shorter than what he actually is C. The same height as he actually is D. Depends on the obliquity
18. Two equal electric currents are flowing perpendicular to each other as shown in figure. AB and CD are perpendicular to each other and symmetrically placed with respect to the currents. The resultant magnetic field is expected to be zero on
17. Six identical resistors are connected as shown in the figure. The equivalent resistance will be
A.
AB
B.
CD
C.
Both AB and CD
D.
Both OD and BO
A. B. C. D.
Maximum between A and C. Maximum between B and C. Maximum between A and B. None of these
19. Two wires of the same material having lengths in the ratio 1 : 2 and diameters in the ratio 2 : 3 are connected in series with an accumulator. Find the ratio of potential difference across two wires. A. 1 : 3 B. 3 : 4 C. 9 : 8 D. 8 : 9
Copyright©2015. Science Olympiad Foundation (SOF)
16th NSO - SET B
3
20. Match Column I with Column II and select the correct option from the codes given below. Column I Column II 1 141 (a) Nuclear fusion (i) 235 92 U + 0 n → 56 Ba 92 1 + 36Kr + 3 0n + Q
(b) (c) (d) A. B. C. D.
Nuclear fission (ii) Liquid Hydrogen Nuclear fuel (iii) Plutonium Rocket fuel (iv) 12 H + 12H → 42He + Q a-(i), b-(ii), c-(iv), d-(iii) a-(iv), b-(i), c-(iii), d-(ii) a-(ii), b-(iv), c-(i), d-(iii) a-(iii), b-(ii), c-(iv), d-(i)
21. Read the given statements and select the correct option. Statement-1 : A total reflecting prism is used to erect the inverted image without deviation. Statement-2 : Rays of light incident parallel to the base of prism emerge out as parallel rays. A. Both statements-1 and 2 are true and statement-2 is the correct explanation of statement-1. B. Both statements-1 and 2 are true but statement-2 is not the correct explanation of statement-1. C. Statement-1 is true and statement-2 is false. D. Both statements-1 and 2 are false. 22. A railway engine whistling at a constant frequency moves with a constant speed. It goes past a stationary observer standing beside the railway track. The frequency (f ) of the sound heard by the observer is plotted against time(t). Which of the following best represents the resulting curve?
A.
f
B.
f t
t
C.
f
t
D.
f t
23. A satellite is moving with a constant speed v in a circular orbit about the earth. An object of mass m is ejected from the satellite such that it just escapes from the gravitational pull of the earth. At the time of its ejection, the kinetic energy of the object is 1 2 mv A. 2 1 2 mv B. 4 C. mv2 D. 2mv2
24. A gun fires bullets each of mass 1 g with velocity of 10 m s–1 by exerting a constant force of 5 g weight. Then the number of bullets fired per second is (Take g = 10 m s–2) A. 5 B. 10 C. 15 D. 20 25. A concave mirror is placed on a horizontal table, with its axis directed vertically upwards. Let O be the pole of the mirror and C its centre of curvature. A point object is placed at C. It has a real image, also located at C. If the mirror is now filled with water, the image will be A. Real, and will remain at C. B. Real, and located at a point between C and ∞. C. Virtual, and located at a point between C and O. D. Real, and located at a point between C and O. 26. A mixture of sodium chloride and calcium carbonate is separated using the steps given below. In which order should the steps be carried out?
A. C.
1, 2 then 3 1, 3 then 2
B. D.
2, 1 then 3 3, 1 then 2
27. Ankita was given an element Q which belongs to group 2 and period 2 of the periodic table. Which of the following properties would it exhibit? A. Liquid, Non-metallic, Monovalent B. Solid, Metallic, Divalent C. Gaseous, Non-metallic, Trivalent D. Solid, Non-metallic, Divalent 28. Few properties of substances P, Q, R and S are given below. Conductivity Melting Boiling Brittleness In solid In molten Point Point state state P 342 K 412 K × × × Q 1045 K 1900 K × R 821 K 542 K × 236 K S 42 K × Which of the four substances represents calcium chloride? A. P B. Q C. R D. S
Copyright©2015. Science Olympiad Foundation (SOF)
16th NSO - SET B
4
29. What is the chemical formula of the compound formed when 24 X combines with 199Y? 12 A. XY B. X2Y C. XY2 D. X2Y3
34. What is the particle shown in the given diagram?
30. Match Column I with Column II and choose the correct option from the codes given below. Column I Column II a. Cleaning agent for (i) Sodium hydrogen domestic purpose carbonate b. In soda-acid fire (ii) Bleaching powder extinguishers c. Disinfecting (iii) Sodium hydroxide drinking water d. De-greasing metals, (iv) Sodium carbonate Paper making A. a-(i), b-(iv), c-(iii), d-(ii) B. a-(ii), b-(iii), c-(iv), d-(i) C. a-(iii), b-(ii), c-(iv), d-(i) D. a-(iv), b-(i), c-(ii), d-(iii)
35. The diagrams given below show the electron arrangement in the outer shells of five elements, 1 to 5. All elements are from period 3 of the periodic table.
31. Which of the following statements about the given chemical reactions is wrong? A. Calcium hydroxide reacts instantly with the carbon dioxide in air to form a thin layer of calcium carbonate on the walls. B. Reaction in which heat is released along with the formation of products are exothermic reactions. 340 atm C. CO(g) + 2H2(g) CH3OH(l) D. Decomposition of silver chloride to silver and chlorine occurs in presence of light. 32. Three elements X, Y and Z have consecutive, increasing proton (atomic) numbers. If element X is a noble gas, what will be the symbol for the ion of element Z in its compounds? A. Z 2– B. Z + 2+ C. Z D. Z 3+ 33. The table given below gives information about four unknown substances (Room temperature = 30°C).
Substance
Melting point (°C)
Boiling point (°C)
I
–188
– 40
II
–110
34
III
16
117
IV
37
340
Which of the following substances is a volatile liquid? A. I B. II C. III D. IV
A.
F–
B.
N3–
C. D.
Ne O2–
1 2 3 4 5 Which two elements will form a compound with the YZ 2 type formula? A. 4 and 2 B. 5 and 2 C. 3 and 5 D. Both A and B
36. Auxin is a phytohormone which is synthesized in the tips of plant shoots. In an experiment, a young shoot was taken and placed in a box. Light was allowed to reach towards it only from a hole. Which one of the following diagrams correctly depicts the movement of auxin after one hour of exposure to light? [X is the region where auxin is formed.]
A.
B.
C.
D.
37. Which of the following statements is incorrect? A. Pesticides on entering the food chain, accumulate in high amount in the bodies of higher predators which causes damage to the ecosystem. B. Blood in arteries has more oxygen than blood in veins, except for the pulmonary arteries and pulmonary veins. C. When blood is spinned in a centrifuge to separate plasma from the blood cells (RBCs, WBCs, platelets etc.), blood cells constitute the supernatant and plasma constitutes the pellet. D. Poultry is India’s most efficient converter of low-fibre food stuff (which is unfit for human consumption) into highly nutritious protein food.
Copyright©2015. Science Olympiad Foundation (SOF)
16th NSO - SET B
5
38. Study the given flow chart regarding some cell organelles present in a cell.
Which of the following options is incorrect regarding X, Y and Z? A. Organelle X can transform solar energy into chemical energy of carbohydrates. B. Enzymes of organelle Y are present in the acrosome of human sperm cell which digest the limiting membrane of ovum during fertilization. C. On starvation, organelle Z digests stored food contents and other cellular components; this process is called as autophagy. D. Organelle X can bring about stepwise oxidation of carbohydrates to produce CO2 and water.
39.
40. With respect to typical Mendelian inheritance, which of the following statements is true for a cross between a tall plant with yellow seeds (TtYy) and a dwarf plant with green seeds (ttyy)? A. Tall plants with yellow seeds and dwarf plants with green seeds are produced in equal proportion. B. Both genotypic as well as phenotypic ratios obtained are same, i.e., 1 : 1 : 1 : 1. C. This cites an example of a test cross which is performed to identify the genotype of an unknown parent. D. All of these 41. Which of the following is an incorrect match? Disease Causative Mode of organism transmission A. Pulmonary Bacterium Airborne and tuberculosis droplet infection B. Gonorrhoea Bacterium Through sexual contact C. Dengue Virus Through vector Culex mosquito D. Ringworm Fungus From clothes of infected person 42. The diagrammatic section given below shows exchange of gases between an alveolus and a pulmonary blood capillary.
Given graph shows the percentage yield of a crop in two crop fields A and B, over a period of time. Analyze the graph and select the correct statements regarding crop fields A and B. (i) In crop field A, chemical fertilizers are added which do not immediately supply the nutrients and thus the highest peak is slightly delayed. (ii) In crop field B, addition of manures results in sudden increase in crop yield due to more supply of N, P, K nutrients. (iii) In crop field B, chemical fertilizers are added and the gradual decline in crop yield is due to killing of the useful microbes in the soil as a result of persistence of chemicals. (iv) Crop field A is supplied with manure as it is consistently beneficial for the yield of crop, whereas crop field B is supplied with chemical fertilizer as it decreases yield of crop eventually. A. (i) and (ii) B. (iii) and (iv) C. (i), (ii) and (iv) D. (i), (ii), (iii) and (iv)
Identify the labels (P, Q, R and S) and select the incorrect option regarding this. A. P – Contain a red pigment B. Q – O2 diffuses from the alveoli to the blood C. R – O2 diffuses from the blood to the alveoli D. S – Blood with high CO2 content
43. The plant tissue shown in the given figure is A. A simple permanent tissue, which stores food material. B. A complex permanent tissue, which stores food material. C. A simple permanent tissue which provides mechanical strength due to the presence of wall thickenings. D. A complex permanent tissue that performs conduction of water and minerals.
Copyright©2015. Science Olympiad Foundation (SOF)
16th NSO - SET B
6
44. Read the given statements and select the correct option. Statement-1 : Ecosystem is the structural and functional unit of biosphere consisting of abiotic and biotic components, which interact with each other and maintain a balance in nature. Statement-2 : In an ecosystem, energy and matter are continuously exchanged between living and nonliving components. A. Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1. B. Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.
C. D.
Statement 1 is true and statement 2 is false. Both statements 1 and 2 are false.
45. The diagram shows a foetus developing in a uterus. Which of the labelled parts prevents dessication of the foetus and acts as a protective cushion that absorbs shocks?
A.
P
B.
Q
C.
R
D.
S
Achievers Section DIRECTION (Q. 46 & 47) : Refer the given passage and answer the following questions. On the basis of reactivity, we can group the metals into the following three categories : (i) Metals of low reactivity. (ii) Metals of medium reactivity. (iii) Metals of high reactivity. Different techniques are to be used for obtaining the metals falling in each category. 46. The metals high up in the reactivity series are obtained by A. Reduction with carbon B. Electrolytic reduction C. Reduction by heating D. Displacement reaction 47. Fe2O3(s) + 2Al(s) → 2Fe(l) + Al2O3(s) The above reaction is known as highly Y . What are X and Y respectively? A. Electrolysis, endothermic B. Refining, endothermic C. Calcination, exothermic D. Thermite reaction, exothermic
X
and it is
48. The velocity-time graph for a vehicle is shown below. Which among the following is the corresponding acceleration time graph?
A.
B.
C.
D.
49. Read the following statements. a. __________ are the plants with well differentiated reproductive tissues which ultimately produce seeds. b. Well-developed individuals breed more successfully than those who are less well-developed and pass on their genes to next generation. This process is called as _____________. c. Nictitating membrane and coccyx bone in human beings are the examples of __________ organs. d. ___________ is always an active, energy-requiring process involving contractions mainly of the diaphragm and external intercostal muscles. e. Through the process of __________, cells formed by meristematic tissues lose the capacity to divide, transform into permanent tissue and become specialized to perform certain specific functions. Select the option which correctly fills the blanks in any two of the above statements. A. (a) Cryptogams (b) Natural selection B. (c) Vestigial (d) Expiration C. (a) Phanaerogams (e) Differentiation D. (b) Struggle for existence (d) Inspiration
Copyright©2015. Science Olympiad Foundation (SOF)
16th NSO - SET B
7
50. Study the following features. – Triploblastic animal – Body can be divided into two similar halves by only one plane passing through longitudinal axis of body – No body cavity present between epidermis and gastrodermis – D igestive system is branched and incomplete without anus. Identify the animal on the basis of above given features.
A.
B.
C.
D.
SPACE FOR ROUGH WORK
Copyright©2015. Science Olympiad Foundation (SOF)
Class 10 17th
SET A Year 2014
Copyright©2015. Science Olympiad Foundation (SOF)
17th NSO - SET A
2
Logical reasoning 1.
2.
If yesterday was Saturday’s tomorrow and tomorrow is Wednesday’s yesterday, then what day would it be today? A. Sunday B. Monday C. Tuesday D. Friday
ba A. C.
4.
6.
In the following letter series, some of the letters are missing which are given in that order as one of the options below it. Select the correct option.
3.
A. C.
acbb bcab
cb
b
4 6
B. D.
5 2
There are seven figures, the first and last of which are unmarked, and the remaining are marked as P, Q, R, S and T. These seven figures form a series. However, one of the five marked figures does not fit into the series. Identify that figure in the given options.
bab B. D.
bacc cabb
Study the following information and answer the question given below. I. A, B, C, D, E, F, G and H are standing in a row facing North. II. B is not a neighbour of G. III. F is at the immediate right of G and neighbour of E. IV. G is not at the extreme end. V. A is sixth to the left of E. VI. H is sixth to the right of C. After making the linear arrangement, we join them to form a circular arrangement by joining A and H. Which of the following is the odd one out? A. B-D B. E-F C. A-C D. H-G The positions of four policemen A, B, C and D is given in a circular park. The park is divided into sixteen plots. P, Q, R and K are the offenders whom they have to catch after given moves. The given figure shows their positions. (Note that the by-lanes are North-South and East-West.)
A. C.
P R
B. D.
Q S
7.
A large cube is dipped into a tub filled with colour. When the cube is taken out, it is observed that all its sides are painted. This large cube is now cut into 125 small but identical cubes. How many of the smaller cubes have exactly three faces painted? A. 4 B. 8 C. 9 D. None of these
8.
Select the mirror image of given combination, if the mirror is placed vertically to the left.
9.
A. C.
B. D.
Following two figures show the expenditure on various items by families A and B. Which of the conclusions given below is not correct?
5.
If A, B, C and D were to move clockwise four plots and P, Q, R and K were to move anti-clockwise six plots, then out of the given options, who two would be North and South respectively? A. P and A B. R and D C. Q and B D. P and C In the following number series, how many 4s are there, which are immediately preceded by a pair of numbers whose product is more than the product of the pair of numbers immediately following 4? 534648947645748448023431472
A. B. C. D.
A spends B spends B spends A spends
more on food than B. more on clothing than A. equal amounts on food and clothing. more on rent than on any other item.
10. In a certain code language, the letters immediate next to vowels are replaced with D, all other consonants with preceding letters and the vowels are replaced with Z. How will the word STANDING be written in that code language? A. RSZMCZMF B. TSZMCZFM C. RSZMCZDF D. RSZDCZDF
Copyright©2015. Science Olympiad Foundation (SOF)
17th NSO - SET A
3
11. In the following question, a related pair of figures is followed by four other pairs of figures. Out of the four pairs, select the pair that has a relationship similar to that in the question pair. The best answer is to be selected from a group of fairly close choices.
A.
A.
B.
C.
D.
14. P is the son of Q while Q and R are sisters to one another. T is the mother of R. If S is the son of T, which of the following statements is correct? A. T is the brother of Q. B. S is the cousin of P. C. Q and S are sisters. D. S is the maternal uncle of P.
B.
C.
15. Figures P, Q and R shows a sequence of folding of a piece of paper. Figure R shows the manner in which the folded paper has been cut. Select a figure from the options which would most closely resemble the unfolded form of figure R.
D.
12. A set of figures carrying certain characters is given. Assuming that the characters in each set follow a similar pattern, find the missing character. A.
13
B.
15
C.
17
D.
19
A.
B.
C.
D.
13. Select the figure from the options which will replace the question mark (?) in the given series.
Science 16. A body is suspended from a spring balance kept in a satellite. The reading of the balance is W1 when the satellite goes in an orbit of radius R and is W2 when it goes in an orbit of radius 2R. Then A. W1 = W2 B. W1 < W2 C. W1 > W2 D. W1 ≠ W2 17. Read the given statements and mark the correct option. Statement 1 : Magnetic field is not associated with a stationary charge. Statement 2 : Magnetic field can be detected by means of its effect on a current carrying conductor. A. Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.
B. C. D.
Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1. Statement 1 is true but statement 2 is false. Both statements 1 and 2 are false.
18. Three identical resistors are connected across a voltage source V such that one of them is in parallel with other two, which are connected in series as shown. The power dissipated through the first one, compared to the power dissipated by each of the other two is _______. A. The same B. Half as much C. Twice as much D. Four times as much V
Copyright©2015. Science Olympiad Foundation (SOF)
17th NSO - SET A
4
19. A coordinate axis as shown in figure is kept in front of a converging lens at a distance 2f from it, where Y f is the focal length of the lens. Which of the following shows the approximate shape of the X image? Assume that X-axis is the principal axis of the lens. Z Y Z X
A.
Z
Y
C.
Z
Y
D.
X
X
B.
X Y
Z
20. A box of mass 2 kg has an initial speed of 10 m s–1 at the foot of the ramp. Given that the friction along the ramp is 2 N, –1 s find the height h that h m 10 the box reaches when its 60° 2 kg speed is 5 m s–1. –1 (Take g = 10 N kg ) A. 2.5 m B. 3.4 m C. 4.0 m D. 6.0 m 21. A boy stands between two vertical walls. After making a loud clap, he hears two echoes at an interval of 1 s. If the distance between the two walls is 1000 m, what is his distance from the nearest wall? (Take speed of sound = 300 m s–1). A. 425 m B. 215 m C. 265 m D. 365 m 22. Energy released in the fission of 1 kg of U-235 is equivalent to energy obtained from burning of coal weighing approximately ______. A. 25 ton B. 250 ton C. 2500 ton D. 25000 ton 23. A glass sphere of radius 1 m and refractive index 3 is silvered at its back. A point object is kept at 2 a distance of 1 m from the front face, as shown in figure. Find the position of the final image. −5 A. m 1m 7 7 m B. 1m 5
C.
−13 m 7
D.
7 m 13
24. A charged particle enters a uniform magnetic field perpendicular to its initial direction, travelling in air. The particle is seen to follow the path as shown in the figure. (i) The magnetic field Entry strength may have been increased while the particle was travelling in air. B (ii) The particle lost energy by ionising the air. (iii) The particle lost charge by ionising the air. Which of the above statements is/are correct? A. (ii) only B. (i) and (ii) C. (ii) and (iii) D. (i), (ii) and (iii) 25. The height of mercury in a barometer at sea level is higher than that at the top of a hill. Which of the following inferences about this observation is correct? A. The air molecules at sea level have higher mass than that of at the top of a hill. B. The air molecules at sea level experience less gravitational force than that of at the top of a hill. C. The air molecules per unit volume at sea level are greater than that of at the top of a hill. D. The speed of air molecules at sea level is lower than that of at the top of a hill. 26. Nandita mixed two solutions X and Y. She recorded the following observations and conclusions in her notebook. I. A yellow precipitate is formed. II. It is a double displacement reaction. The solutions X and Y respectively are A. Pb(NO3)2 , KI B. AgNO3, NaCl C. Na2SO4, BaCl2 D. FeCl3, NH4OH 27. Which of the following is not an isotope of the other three? A. C.
7p 8n 7p 6n
B.
D.
8p 9n 7p 7n
28. Compound X decolourises acidified potassium dichromate to produce an acid with a pH value of 4.5. Which of the following could be the structure of X? A. CH3CH2COOH B. CH3CH2CH2OH D. CH3CH2CH3 C. CH2 CH CH3
Copyright©2015. Science Olympiad Foundation (SOF)
17th NSO - SET A
5
29. The positions of four elements K, L, M and N in the periodic table are shown below : Group 13 K – Ga
Group 14 – L M
Group 15 – – N
Which of the following statements are correct? I. K, L, M and N are metalloids. II. K is a metal while L, M and N are non-metals. III. Among these four elements, K is the smallest in size. IV. K is a metal while L and M are metalloids and N is a non‑metal. A. II and III B. I and III C. III and IV D. None of these 30. Five students have different amounts of substances. Nitika : 6.022 × 1024 atoms of Ca Sagar : 2 g of C Pooja : 0.5 g atom of Ag Ranjan : 0.3 mole of H2SO4 Yash : 6.022 × 1025 atoms of CO2 [At. wts. of Ag = 108 u, S = 32 u, Ca = 40 u, C = 12 u, H = 1 u, O = 16 u] Arrange the students in decreasing order of masses of the substances that they have. A. Sagar > Ranjan > Pooja > Nitika > Yash B. Yash > Nitika > Ranjan > Pooja > Sagar C. Yash > Nitika > Pooja > Ranjan > Sagar D. Pooja > Sagar > Yash > Ranjan > Nitika 31. Four solutions labelled as P, Q, R and S have pH values 1, 9, 3 and 13 respectively. Which of the following statements about the given solutions is incorrect? A. Solution P has higher concentration of hydrogen ions than solution R. B. Solution Q has lower concentration of hydroxyl ions than solution S. C. Solutions P and Q will turn red litmus solution blue. D. Solution P is highly acidic while solution Q is weakly basic. 32. The atomic numbers of some elements are given below : Element
M
N
O
P
Q
Atomic number
15
9
3
18
12
The number of valence electrons 8, 2, 1, 7 and 5 respectively are present in A. Q, P, O, N, M B. N, O, Q, M, P C. P, Q, O, N, M D. O, P, N, M, Q
33. Three hydrocarbons X, Y and Z are shown below: X : CH3CH2CH2CH2CH3; Y :
Z : CH3CH2 CH CH CH3 Identify the incorrect statements about these three hydrocarbons. I. X and Y both differ by a CH2 unit. II. X and Z have the same boiling point. III. All have different general formulae. IV. Y and Z have different molecular masses. A. I and II B. II and III C. I and IV D. All the statements are incorrect.
34. Study the given graphs carefully.
Graph-1 : The heating curve of substance P
Graph-2 : The cooling curve of substance Q
Which of the following statements is correct? A. The melting point of the substance P is 200°C. B. The boiling point of the substance Q is 50°C. C. At point ‘b’, the substance P exists in both solid and liquid states. D. At point ‘x’, the substance Q exists in both liquid and gaseous states while at point ‘d’, the substance P exists in both gaseous and liquid states. 35. Aditya accidentally mixed copper sulphate crystals with sand. How can he recover the copper sulphate crystals? 1. Add water to the mixture and filter. 2. Evaporate the filtrate to dryness. 3. Heat the filtrate until it is saturated, and let it cool. 4. Wash the residue, and dry it between sheets of filter paper. A. 1 and 2 B. 1 and 3 C. 1, 2 and 4 D. 1 and 4
Copyright©2015. Science Olympiad Foundation (SOF)
17th NSO - SET A
6
36. Identify the given organisms, match them with their peculiar features as shown in the table and select the option with all the correct matches.
(i) P Q R S A. B. C. D.
(ii)
(iii)
Unicellular Multicellular Prokaryotic Eukaryotic (i) P, R, U, V P, R, V, T P, R, U, V P, R, V, T
T U V W
(ii) P, S, V P, S, V P, S, V P, S, V
39. Given are different parts of respiratory tract. P. Nasal cavity Q. Alveolar duct R. Larynx S. Respiratory bronchioles T. Epiglottis U. Terminal bronchioles V. Lobular bronchioles W. Trachea X. Bronchus Which path a molecule of carbon dioxide in the alveolus of the inferior lobe of lung takes on its journey to the outside? A. Q → U → S → V → X → W → R → T → P B. Q → S → U → V → X → W → T → R → P C. Q → S → U → V → X → W → R → T → P D. Q → S → U → X → V → W → R → T → P
(iv)
Cell wall present Cell wall absent Autotrophic Heterotrophic (iii) P, S, W, U P, S, U, W Q, S, W, U P, S, W, U
(iv) Q, S, V, W Q, S, U, W Q, S, T, W Q, S, T, W
37. Albumin is the most abundant protein in blood plasma, accounting for approximately 60% of all plasma protein. A person was found to have reduced level of plasma albumin due to kidney damage. Which of the labelled part(s) would you expect to be the primary site of damage for this patient?
40. A large forest area got burnt in a massive fire. The species that would invade such bared area to rapidly colonize it have __________ , __________ and __________ characteristics. Fill up the blanks from the given choices and select the correct option. (i) Long lifespan (ii) Rapid reproduction (iii) Fast growth (iv) Strong dispersal ability (v) Strong defense against natural enemies or predators. (vi) Large sized individuals A. (i), (ii), (iii) B. (ii), (iii), (iv) C. (i), (iv), (vi) D. (iii), (iv), (vi) 41. (i) SER (ii) Golgi apparatus (iii) Lysosome (v) Ribosome
A. C.
U, T R only
B. D.
P only P, Q, S
38. Four seedlings of equal size and length are taken and given different treatments: Plant P : Tip not removed, nothing applied. Plant Q : Tip removed, nothing applied. Plant R : Tip removed, gelatin block was placed on cut edge. Plant S : Tip removed, gelatin block with auxin was placed on cut edge. What would be the correct order of growth rates of the plants? A. S > P > R > Q B. S > R > P > Q C. P > R > Q > S D. P > S > Q > R
(iv) RER (vi) ER
Using the words in the box complete the synthesis process of digestive enzymes before their exocytosis then select the option that will complete the following passage correctly. 1. The (a) provides extensive surface on which (b) carry protein synthesis or synthesis of digestive enzymes. 2. Synthesized enzymes enter (c) and then (d) for modification. 3. The modified enzymes are stored in (e) which pass outwardly and fuse with plasma membrane during exocytosis. (a) (b) (c) (d) (e) A. (iv) (v) (vi) (ii) (iii) B. (iv) (v) (vi) (iii) (ii) C. (i) (v) (vi) (ii) (iii) D. (i) (v) (vi) (iii) (ii)
Copyright©2015. Science Olympiad Foundation (SOF)
17th NSO - SET A
7
42. R is an organic compound containing only carbon, chlorine and fluorine. It is produced as a volatile derivative of methane, ethane and propane. It has been widely used as refrigerant, propellent and solvent. Montreal protocol phased out manufacture of such compounds because R contributes to S in the atmosphere. Which of the following would not be a consequence of S? A. Increased incidence of severe sunburns B. Increased incidence of cataracts C. Increased incidence of premature skin aging D. Increased rates of lung cancer 43. Rohan made the following statements regarding the section of a tissue as shown in the given figure. (i) It provides mechanical support to the plants. (ii) Its cell wall shows localized thickenings. (iii) Cells are dead. (iv) Cells are filled with protoplasm and have narrow lumen. (v) Cells have hard secondary walls. (vi) It is distributed in almost all parts of the plant body. Which among them are incorrect?
A. C.
(i), (iii), (iv), (v) (ii), (iv), (vi)
B. D.
(ii), (iv), (v), (vi) (ii), (iv), (v)
44. The given graph shows the concentration of dissolved oxygen along a river. At which point is sewage emptied into the river? A.
P
B.
Q
C.
R
D.
S
45. Match Column-I with Column-II and select the correct option from the codes given below. Column-I Column-II (a) Increased egg production (i) Viral disease (b) White leghorn (ii) Carp (c) Ranikhet (iii) Fish by-product (d) Isinglass (iv) Layers (e) Silver carp (v) Exotic fish (f) Bombay duck (vi) Silver revolution (g) Rohu and Catla (vii) Marine fish (a) (b) (c) (d) (e) (f) (g) A. (iv) (vi) (i) (iii) (v) (vii) (ii) B. (vi) (iv) (i) (iii) (vii) (v) (ii) C. (vi) (iv) (i) (vii) (v) (iii) (ii) D. (vi) (iv) (i) (iii) (v) (vii) (ii)
Achievers Section Direction (Q. 46 & 47): Refer to the given passage and answer the following questions. Metals are extracted from their ores by different methods depending on their position in the activity series.
A. B. C. D.
(a)-(v), (b)-(ii), (c)-(iv), (d)-(iii), (e)-(i) (a)-(iv), (b)-(ii), (c)-(v), (d)-(iii), (e)-(i) (a)-(iii), (b)-(ii), (c)-(iv), (d)-(v), (e)-(i) (a)-(i), (b)-(ii), (c)-(v), (d)-(iii), (e)-(iv)
47. Metals which are extracted by heating, electrolysis and by reduction with carbon respectively are A. Copper, magnesium, zinc B. Mercury, aluminium, lead C. Mercury, sodium, calcium D. Both A and B
46. Match the Column-I with Column-II and select the correct option from the codes given below. Column-I Column-II (a) Highly reactive metals (i) S (b) Calcination (ii) T (c) Electrolytic reduction (iii) P (d) Less reactive metals (iv) R (e) Roasting (v) Q
48. The dwarf variety of garden pea plants are now known to have a mutation in a gene needed for synthesis of gibberellin. F1 plant obtained by Mendel from the tall (TT) × dwarf (tt) cross were tall. Which of the following inferences can be drawn from the given information? (i) Gibberellin causes elongation of stems. (ii) Heterozygous (Tt) plants produce the same amount of gibberellin as homozygous dominant (TT) plants. (iii) Gibberellin induces production of auxin. (iv) Mutation may have occurred in a gene producing an enzyme.
Copyright©2015. Science Olympiad Foundation (SOF)
17th NSO - SET A
A. C.
(i) and (ii) (i), (ii), (iii) and (iv)
8
B. D.
(ii), (iii) and (iv) (i), (ii) and (iv)
49. The given figure shows monthly changes in the human ovary during the reproductive cycle.
B. C.
D.
The hormone produced by structure ‘R’stimulates the pituitary gland to secrete luteinizing hormone. The hormone produced by structure ‘S’ is responsible for the development of female secondary sex characters. The hormones produced by ‘P’ and ‘Q’ stimulate the proliferation of the endometrial lining of the uterine wall.
50. A particle starts from rest at time t = 0 and moves in a straight line with acceleration as plotted in given graph. The speed of the particle will be maximum at time ____.
Which of the following statements is most accurate regarding the labelled structure(s)? A. Before puberty, only structure ‘T’ undergoes meiosis.
A.
1s
B.
2s
C.
3 s
D.
4s
SPACE FOR ROUGH WORK
Copyright©2015. Science Olympiad Foundation (SOF)
Class 10 17th
SET B Year 2014
Copyright©2015. Science Olympiad Foundation (SOF)
17th NSO - SET B
2
Logical Reasoning 1.
2.
3.
4. 5.
Some of the letters are missing which are given in that order as one of the options below it. Select the correct option. A. C.
__ __ aba __ __ ba __ ab abbba B. abbab baabb D. bbaba
In the given number series, how many 9s are there which are immediately preceded by a pair of numbers whose product is more than the product of the pair of numbers immediately following 9? 87 89 A. C.
996845938492519226943925 37 4 B. 3 6 D. 5
If A is coded as 5, L as 16, J as 14 and so on. Following this code, STAR is coded as 296, which of the following represents the code of JAILER ? A. 316 B. 395 C. 237 D. 553
7.
8.
Abhishek said that he was born on 29 February 1900. What birthday will he celebrate in the year 2000? A. 99th B. 25th th C. 100 D. Abhishek is lying If the image of a figure in water is seen as what is the actual figure? A.
, then
B.
C.
D.
6.
Study the Venn diagram carefully and select the correct statement.
Mr. Sinha has six children – Pankaj, Ravi, Varun, Amit, Vikas and Prateek. They all were born on 13th November, but each was born in a different year, during six consecutive years. It is also known that (i) Pankaj is elder to Varun. (ii) Ravi is elder to both Amit and Vikas. (iii) Prateek is two years older than Amit. (iv) Pankaj was born either in the year 2002 or 2003. (v) The oldest member of the group was born in the year 2000. (vi) Amit is elder to both Vikas and Varun. Which of the following is the correct list of the group, from the youngest to the oldest? A. Varun, Pankaj, Ravi, Amit, Vikas, Prateek B. Varun, Vikas, Pankaj, Amit, Prateek, Ravi C. Varun, Vikas, Amit, Prateek, Pankaj, Ravi D. Varun, Vikas, Amit, Pankaj, Prateek, Ravi Select the pair that has a relationship similar to the pair in Fig. (X). The best answer is to be selected from a group of fairly close choices.
I
II
Fig. (X)
A.
C.
9.
I
II
I
II
B.
D.
B. C. D.
II
C D E Q P
K R
There are some postgraduates who are rural people. No professor is urban. All post-graduates are rural. All post-graduates are urban.
I
N
W
A.
II
A group of four policemen A, B, C and D is combining a circular park divided into sixteen plots. P, Q, R and K are the offenders who they have to catch after given moves. The figure below shows their positions. Note that the by-lanes are North-South and East-West. A B
I
S
If both A, B, C, D and P, Q, R, K moves clockwise three plots, then who would be positioned North-East and South-West from the given options respectively? A. A and P B. C and P C. D and Q D. B and R
Copyright©2015. Science Olympiad Foundation (SOF)
17th NSO - SET B
3
10. Find the missing number, if the given matrix follows a certain rule row-wise or column-wise.
A. C.
8
6
7
3
7
5
14
12
13
9
13
?
9 13
B. D.
7 11
11. Select a figure from the options which will continue the series as established by the five problem figures. Problem Figures
A.
C.
B.
13. There are seven figures, the first and last of which are un-numbered and the remaining are numbered as 1, 2, 3, 4 and 5. These seven figures form a series. However, one of the five numbered figures does not fit into the series. Select the figure which does not fit into the series.
A. C.
1 4
1
2
3
4
B. D.
3 2
5
14. Which of the following figures will complete the given figure matrix?
A.
B.
C.
D.
?
D.
12. Six different faces of a cube are coloured in three different colours – black, green and blue. This cube is now cut into 216 smaller but identical cubes. If N is the number of cubes that is not coloured on any of its faces, then which of the following best describes the value of N ? A. 125 < N < 130 B. 120 ≤ N ≤ 125 C. 115 ≤ N ≤ 120 D. 50 < N < 100
15. A is the brother of B. B is the brother of C. D is the father of A. Which of the following statements cannot be definitely true? A. B is the brother of A. B. B is the son of D. C. A is the brother of C. D. C is the brother of A.
Science 16. A network is constructed using five resistors, each of resistance R, and three switches K1, K 2 and K 3. Which switch combination will give rise to maximum total resistance between points X and Y? R R X
K1
R K2
R
R
K1 K 2 K3 A. Open Closed Open B. Open Closed Closed C. Closed Closed Closed D. Closed Open Closed
K3
Y
17. A constant current flows N in a horizontal wire in the plane of the paper from W E west to east as shown in the given figure. The direction of magnetic field will be S north to south, at a point W E ______. A. Directly above the wire B. Directly below the wire C. Located in the plane of the paper, on the north side of the wire D. Located in the plane of the paper, on the south side of the wire.
Copyright©2015. Science Olympiad Foundation (SOF)
17th NSO - SET B
4
18. Read the given statements and select the correct option. Statement 1 : A concave mirror and a convex lens both have the same focal length in air. When they are submerged in water, they will still have the same focal length. Statement 2 : The refractive index of water is greater than the refractive index of air. A. Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1. B. Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1. C. Statement 1 is true but statement 2 is false. D. Statement 1 is false but statement 2 is true. 19. An explosion takes place at a distance of 3200 m away from a sound detector that detects only the sound coming from the ground. Explosion The sound detector detects Sound two sound signals at detector 0.64 s and 0.80 s after the Air explosion. Find the depth 3200 m x x of the soft ground. Soft ground A. 1200 m Hard ground B. 2400 m C. 3600 m D. 4800 m 20. A concave mirror of focal length 10 cm is dipped in water as shown in the given figure. S Given that the refractive 10 cm 4 and object 3 S is placed on the principal axis of the concave mirror. The final image formed by Concave mirror the system is at 85 cm from water surface A. 4 85 B. cm from mirror surface 4 94 C. cm from water surface 3 94 D. cm from mirror surface. 3
index of water is
5 cm 3
21. An acrobat swings from point P to Q as shown in the given figure. The length of the swinging rod is 5 m. The minimum initial speed, the acrobat must have, at point P is (Take g = 10 N kg–1)
22. A heater, a fan and a bulb are connected to the 12 V battery as shown in the given diagram.
The fan with a resistance of R has a potential difference of 6 V across it and a current of 1 A through it. The bulb has a current of 2 A flowing through it. Which of the following statements is true? A. The voltage across the bulb is 6 V and its resistance is 2R. B. The voltage across the bulb is 6 V and its resistance 1 is R. 2 C. The voltage across the heater is 6 V and its resistance is 2 R. D. The voltage across the heater is 6 V and its 1 resistance is R. 2
23. Which of the following statements is/are true regarding a typical solar cell? (i) It develops a voltage of 0.5 to 1 volt. (ii) It can produce only upto 0.5 W of electricity. (iii) It is made from silicon. (iv) Efficiency of solar cell is low. (v) It is used for many scientific and technological applications. A. (i), (ii) and (iii) only B. (i), (iii) and (iv) only C. (i), (iii), (iv) and (v) only D. All of these 24. Two identical balls, P and Q are being dropped from different levels of a building. If ball P takes twice the time than ball Q to reach the ground, then ______. A. The distance travelled by ball P is half the distance travelled by ball Q B. The distance travelled by ball P is twice the distance travelled by ball Q C. The distance travelled by ball P is four times the distance travelled by ball Q D. The distance travelled by ball P is eight times the distance travelled by ball Q
A.
10 m s–1
B.
20 m s–1
C.
50 m s–1
25. A satellite moves in a circle around the Earth. The radius of this circle is equal to one half of the radius of the Moon's orbit. The satellite completes one revolution in 1 2 lunar month B. lunar month A. 2 3
D.
Cannot be determined
C.
21/2 lunar month
Copyright©2015. Science Olympiad Foundation (SOF)
D.
2–3/2 lunar month
17th NSO - SET B
5
26. Oxide M is a colourless gas. It reacts with oxygen to form a reddish-brown gas, oxide N. The solubility of oxides M and N in various solvents is shown below : Solvent Oxide M Oxide N Water Insoluble Soluble Aqueous NaOH Insoluble Soluble Hydrochloric acid Insoluble Insoluble Which of the following statements is correct? A. Oxide M is an acidic oxide. B. Oxide M is an amphoteric oxide. C. Oxide N is a basic oxide. D. Oxide N is an acidic oxide. 27. The boiling points of some gases found in air are given below : Element Krypton Neon Nitrogen Oxygen Boiling –152 –246 –196 –183 point (°C) If liquid mixture is fractionally distilled, the order of gases distilled out (starting from first) is _____. A. Krypton, neon, nitrogen, oxygen B. Neon, nitrogen, oxygen, krypton C. Nitrogen, neon, oxygen, krypton D. Oxygen, neon, nitrogen, krypton 28. How many of the total number of electrons in a molecule of ethyne C2H2 are not involved in bonding? A. 4 B. 10 C. 6 D. 0 29. Study the given graph carefully.
31. A compound P contains two hydrogen, one sulphur and four oxygen atoms. Another compound Q contains five hydrogen, one oxygen and one nitrogen atoms. The formula of a new compound formed by the divalent anion of P and monovalent cation of Q is A. NH4HSO4 B. (NH4)2SO3 C. NH4HSO3 D. (NH4)2SO4 32. A part of the periodic table is given below : Groups
I. II. III. IV. The A. C.
c and d contain same number of protons. Pairs (a, b), ( f, g) and (i, j) are isobars. Pairs (c, d) and (g, h) are isotopes. e and f have different number of neutrons. correct statements are I, II and IV B. I, III and IV I and III D. All of these
Metal X 30. Strips of metal X were dipped into two solutions as shown below : A greyish metallic Silver nitrate Zinc nitrate deposit was found on solution solution both strips. Which of the following could be metal X? A. Cu B. Mg C. Pb D. Fe
2
13
14
15
16
17
18
Periods 2 Q L R H 3 M 4 N V 5 G (The letters are not the actual chemical symbols of the elements.) Choose the incorrect statement among the following. A. Q and R combine together to form a compound, Q 2 R 3. B. N is a metal with valency 2 and L is a non-metal with valency 3. C. G is the most reactive metal and H is the most reactive non-metal. D. M for ms ionic compou nds and V is ver y reactive.
33. Schematic atomic structures of four different R and 147S 3– are I, II, III and IV elements 199P, 2412Q 2+, 28 14 respectively.
1
I
III The incorrect representations are A. I, II and IV B. C. III and IV D.
II
IV I, III and IV I and III
34. In the following reactions ethanol is either a reactant or product. I. Combustion of ethanol II. Dehydration of ethanol to ethene III. Fermentation of glucose IV. Oxidation of ethanol to ethanoic acid The reactions in which water is also either a reactant or product are A. I, III and IV B. II, III and IV C. I, II and IV D. I and IV
Copyright©2015. Science Olympiad Foundation (SOF)
17th NSO - SET B
6
35. The melting and boiling points of three pure substances X, Y and Z are given in the table. Substance Melting point Boiling point (°C) (°C) 55 280 X –6 65 Y – 100 – 34 Z
At room temperature, 25°C A. Z is a gas B. X is a volatile liquid C. Y is a solid D. All are correct.
36. Study carefully the key depicting the type of plant tissues : Key : Types of meristematic tissue – P, Q Types of permanent simple tissue – R, S Types of parenchymatous tissue – T, U Identify these tissues (P to U) from the list of their functions given below. (i) It provides mechanical support, elasticity and tensile strength to the body. (ii) This tissue is responsible for linear growth of an organ. (iii) It provides a protective covering around seeds and nuts. (iv) It provides buoyancy to aquatic plants to help them float. (v) It is responsible for growth of leaves and internodes. (vi) It performs the process of photosynthesis. (i) (ii) (iii) (iv) (v) (vi) A. Q S T R U P B. S Q R T P U C. T U P Q S R D. P Q T R U S 37. Refer to the diagramshowing the vascular tissue from a dicotyledonous plant and answer the following question. Which of the following statements correctly compares structures P and Q? A. P has cell wall made of lignin, but Q has cell wall made of cellulose. B. P transports substances only from roots to leaves, but Q transports substances in either direction. C. P comprises cells that largely lack cytoplasm, but Q comprises cells that possess cytoplasm. D. P contains water and mineral salts, while Q contains food substances in the form of starch.
38. Cells without nucleoli die because they do not possess ______. A. Centrioles and so are unable to undergo cell division B. Lysosomes and so are unable to destroy worn out organelles C. Mitochondria and so are unable to obtain energy D. Ribosomes and so are unable to manufacture proteins. 39. Pea plants can have smooth seeds or wrinkled seeds. One of the phenotypes is completely dominant over the other. A farmer decides to pollinate one flower of a plant with smooth seeds using pollen from a plant with wrinkled seeds. The resulting pea pod has all smooth seeds. Which of the following conclusion(s) can be drawn? 1. The allele for smooth seeds is dominant over that for wrinkled seeds. 2. The parent plant with smooth seeds is a homozygote. 3. The parent plant with wrinkled seeds is a homozygote. A. 1 only B. 2 only C. 1 and 3 D. 1, 2 and 3 Direction : Refer to the food web given below to answer questions 40 and 41.
40. A non-biodegradable insecticide known as DDT was sprayed onto the pine trees. In which of the following organisms would most of the DDT eventually accumulate? A. Golden-crowned kinglet B. Pine borer C. Salamander D. Snake 41. With reference to the given food web, which of the following statements is true? A. There is only one organism that makes organic compounds from inorganic substances. B. There is no such one organism that converts organic compounds into inorganic substances. C. The inability of the oak tree to produce acorns would affect the red-tailed hawk more than the snake. D. Removal of X would cause an increase in the population of all the organisms.
Copyright©2015. Science Olympiad Foundation (SOF)
17th NSO - SET B
7
42. The following data regarding two different plant species was obtained. Plant Average Average Texture mass of of pollen diameter pollen grain of pollen grain/mg grain/mm 15 200 Smooth, dry X 45 1800 Spiky, sticky Y What valid conclusion(s) can be drawn from the data? 1. Plant Y is more likely to be wind-pollinated. 2. Plant Y is more likely to be self-pollinated than plant X. 3. Since plant Y has larger and heavier pollen, a larger mass of pollens must be produced by plant Y per unit time to achieve the same efficiency of pollination as plant X. 4. The stigma of plant X is likely to have a larger surface area than those of plant Y. A. 4 only B. 1 and 3 C. 2 and 4 D. 3 and 4 43. Read the following statements (a - c) and select the option which correctly fills up the blanks in any two of the statements. (a) (1) is a bacterial disease, while (2) is a viral disease. (b) (3) is the mode of prevention of diseases. (c) (4) and (5) are diseases which spread through sexual act. A. (1)-Chicken pox, (2)-Typhoid, (4)-Syphilis, (5)-Cholera B. (1)-Cholera, (2)-Chicken pox, (3)-Prophylaxis
C. D.
(3)-Immunization, (4)-AIDS, (5)-Tuberculosis (3)-Vaccination, (4)-Syphilis, (5)-Jaundice
44. Study the given flowchart. Which of the following are the correct examples of W, X, Y and Z?
A.
B. C.
D.
W X Ulothrix Marsilea Riccia Marsilea Lycopodium Marchantia Spirogyra Dryopteris
Y Z Selaginella Cycas Cycas Ipomoea Pinus Ipomoea Funaria Pinus
45. A student suggests that plant cells do not require mitochondria since they have chloroplasts. Which of the following statements would you use to convince him otherwise? A. Having both chloroplasts and mitochondria would maximise the rate of photosynthesis. B. Having both chloroplasts and mitochondria would maximise the rate of energy production. C. Mitochondria would be necessary at night when chloroplasts are no longer able to photosynthesize. D. The chemical energy stored in glucose cannot be efficiently utilized in the cell without mitochondria.
Achievers section 46. The plot represents the flow of current through a wire at three different times. The ratio of charges flowing through the wire at different intervals is A. 1 : 2 : 3 C. 3 : 2 : 2
B. D.
1:1:1 2:3:3
Direction (Q. No. 47 & 48): Refer to the given passage and answer the following questions. Redox reactions are those in which oxidation and reduction take place simultaneously. Oxidation is the gain of oxygen or loss of hydrogen while reduction is the loss of oxygen or gain of hydrogen. Those given off in the oxidation are taken on by another species in the reduction reaction. A substance which helps the other substance to undergo oxidation is called an oxidising agent. Similarly, a substance which helps the other substance to undergo reduction is called a reducing agent.
47. In the reaction, MnO2 + 4HCl → MnCl2 + 2H2O + Cl2 A. HCl is reduced to Cl2 whereas MnO2 is oxidised to MnCl2 B. HCl is oxidised to H2O whereas MnO2 is reduced to MnCl2 C. HCl is reduced to Cl2 whereas MnO2 is oxidised to H2O D. HCl is oxidised to Cl2 whereas MnO2 is reduced to MnCl2. 48. Which of the following statements about the given reaction are not correct? Fe2O3 + 3CO → 2Fe + 3CO2 I. Fe2O3 is getting oxidised to Fe. II. Fe2O3 is acting as a reducing agent. III. CO is acting as a reducing agent. IV. CO is getting reduced to CO2. A. III only B. I, II and IV C. II and IV D. I and III
Copyright©2015. Science Olympiad Foundation (SOF)
17th NSO - SET B
8
49. Refer to the diagram of the human digestive system to answer the following question.
What would be the likely consequence of swapping S and T i.e., from the stomach, food will pass through T to S? A. The digestive enzymes would be denatured. B. The intestinal contents would be highly alkaline and would damage the wall of T. C. The intestinal contents would be too dry and unable to pass through S properly. D. Water absorption would be highly reduced.
50. The graph below shows the hormonal changes during a normal menstrual cycle. What would be a likely consequence if the hormone represented by graph Q is lacking in an adult female?
A.
B.
C. D.
The uterine lining might not be sufficiently stable to support an implanted embryo. Levels of the hormone represented by graph P would be higher than normal. Fertilization of ovum would fail to occur. There would be no significant effect since the functions of the hormones overlap.
SPACE FOR ROUGH WORK
Copyright©2015. Science Olympiad Foundation (SOF)
ANSWER KEYS 13 TH NSO 1. (D)
2. (A)
3. (B)
4. (C)
5. (C)
6. (B)
7. (D)
8. (D)
9.
(C)
10. (D)
11. (B)
12. (A)
13. (B)
14. (D)
15. (B)
16. (B)
17. (C)
18. (B)
19. (D)
20. (B)
21. (B)
22. (C)
23. (A)
24. (C)
25. (A)
26. (B)
27. (D)
28. (C)
29. (A)
30. (A)
31. (B)
32. (B)
33. (C)
34. (D)
35. (D)
36. (C)
37. (B)
38. (C)
39. (B)
40. (B)
41. (D)
42. (D)
43. (B)
44. (B)
45. (D)
46. (C)
47. (B)
48. (A)
49. (B)
50. (A)
7.
8.
9.
(A)
10.
(D)
14 TH NSO 1.
(B)
2.
(A)
3.
(B)
4.
(C)
5.
(A)
6.
(C)
(B)
(B)
11. (C)
12. (B)
13. (B)
14. (C)
15. (B)
16. (D)
17. (C)
18. (A)
19. (D)
20.
(B)
21. (B)
22. (B)
23. (B)
24. (C)
25. (D)
26. (B)
27. (B)
28. (B)
29. (C)
30.
(B)
31. (C)
32. (D)
33. (D)
34. (D)
35. (A)
36. (D)
37. (B)
38. (A)
39. (A)
40.
(B)
41. (C)
42. (C)
43. (C)
44. (D)
45. (C)
46. (A)
47. (B)
48. (C)
49. (D)
50.
(A)
7.
8.
9.
(B)
10.
(A)
15 TH NSO SET A 1.
(B)
2.
(D)
3.
(A)
4.
(A)
5.
(C)
6.
(B)
(D)
(C)
11. (A)
12. (C)
13. (B)
14. (A)
15. (D)
16. (C)
17. (A)
18. (B)
19. (C)
20.
(B)
21. (D)
22. (A)
23. (C)
24. (B)
25. (A)
26. (D)
27. (B)
28. (A)
29. (C)
30.
(B)
31. (C)
32. (A)
33. (D)
34. (A)
35. (D)
36. (A)
37. (C)
38. (D)
39. (A)
40.
(D)
41. (A)
42. (C)
43. (C)
44. (D)
45. (D)
46. (A)
47. (B)
48. (C)
49. (C)
50.
(B)
7.
8.
9.
(D)
10.
(A)
SET B 1.
(B)
2.
(C)
3.
(C)
4.
(B)
5.
(B)
6.
(C)
(D)
(D)
11. (C)
12. (B)
13. (C)
14. (D)
15. (B)
16. (A)
17. (A)
18. (D)
19. (A)
20.
(D)
21. (C)
22. (C)
23. (A)
24. (A)
25. (C)
26. (B)
27. (C)
28. (B)
29. (B)
30.
(D)
31. (B)
32. (B&D)
33. (C)
34. (A)
35. (B)
36. (A)
37. (D)
38. (C)
39. (C)
40.
(B)
41. (B)
42. (A)
43. (C)
44. (A)
45. (A)
46. (B)
47. (C)
48. (C)
49. (C)
50.
(C)
7.
8.
9.
(B)
10.
(A)
16 TH NSO SET A 1.
(A)
2.
(C)
3.
(C)
4.
(B)
5.
(A)
6.
None
(A)
(D)
11. (A)
12. (D)
13. (D)
14. (D)
15. (D)
16. (D)
17. (B)
18. (A)
19. (B)
20.
(C)
21. (B)
22. (D)
23. (B)
24. (B)
25. (A)
26. (C)
27. (B)
28. (A)
29. (A)
30.
(A)
31. (B)
32. (A)
33. (A)
34. (A)
35. (C)
36. (C)
37. (C)
38. (D)
39. (A)
40.
(A)
41. (C)
42. (D)
43. (B)
44. (D)
45. (A)
46. (B)
47. (D)
48. (B)
49. (B)
50.
(A)
7.
8.
9.
(C)
10.
(A)
SET B 1.
(C)
2.
(B)
3.
(A)
4.
(D)
5.
(D)
6.
(C)
(C)
(B)
11. (D)
12. (C)
13. (D)
14. (A)
15. (D)
16. (A)
17. (C)
18. (A)
19. (C)
20.
(B)
21. (A)
22. (D)
23. (C)
24. (A)
25. (D)
26. (B)
27. (B)
28. (B)
29. (C)
30.
(D)
31. (A)
32. (C)
33. (B)
34. (D)
35. (A)
36. (B)
37. (C)
38. (B)
39. (B)
40.
(D)
41. (C)
42. (C)
43. (A)
44. (A)
45. (B)
46. (B)
47. (D)
48. (B)
49. (C)
50.
(A)
Copyright©2015. Science Olympiad Foundation (SOF)
17 TH NSO SET A 1. (B)
2. (B)
3. (D)
4. (B)
5. (B)
6. (A)
7. (B)
8. (D)
9.
(D)
10. (D)
11. (C)
12. (B)
13. (D)
14. (D)
15. (C)
16. (A)
17. (B)
18. (D)
19. (A)
20. (B)
21. (A)
22. (C)
23. (C)
24. (B)
25. (C)
26. (A)
27. (B)
28. (B)
29. (B)
30. (C)
31. (C)
32. (C)
33. (A)
34. (C)
35. (B)
36. (D)
37. (B)
38. (A)
39. (C)
40. (B)
41. (A)
42. (D)
43. (C)
44. (C)
45. (D)
46. (C)
47. (D)
48. (D)
49. (D)
50. (B)
SET B
1. (B)
2. (C)
3. (A)
4. (D)
5. (D)
6. (A)
7. (D)
8. (B)
9.
(A)
10. (D)
11. (D)
12. (D)
13. (A)
14. (B)
15. (D)
16. (A)
17. (A)
18. (D)
19. (A)
20. (A)
21. (A)
22. (B)
23. (C)
24. (C)
25. (D)
26. (D)
27. (B)
28. (A)
29. (B)
30. (B)
31. (D)
32. (D)
33. (B)
34. (C)
35. (A)
36. (B)
37. (B)
38. (D)
39. (D)
40. (D)
41. (C)
42. (A)
43. (B)
44. (B)
45. (D)
46. (B)
47. (D)
48. (B)
49. (C)
50. (A)
Copyright©2015. Science Olympiad Foundation (SOF)
