o eb
ok NATIONAL SCIENCE OLYMPIAD
5 10
(2009-2013) Including Set A and Set B of Year 2012 and 2013
Copyright © 2014 Science Olympiad Foundation. Printed with the permision 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.
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CLASS 10
Contents ªª 12th NSO 2009 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
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 & Advamced | AIPMT | BOARDS | OLYMPIAD | NTSE
FoUNdaTioN CoUrsE For Classes 8, 9 & 10 Class 8
Class 9
Class 10
Class 10 12th
Year 2009
CLASS 10 | 12th NSO - 2009
MENTAL ABILITY 1.
The sides of a regular hexagon of length 2 cm are extended. The alternate sides meet in 6 new points. The area of the starshaped region so obtained is______ (A) 12 3 cm 2
(B) 6 2 cm 2
(D) 12 2 cm 2
(C) 6 3 cm 2
2.
Find the number of triplets of integers in arithmetic progression, the sum of whose squares is 1994. (A) 36 (B) 45 (C) 12 (D) Does not exist
3.
In right angled triangle ABC, BC = 5, AC = 12, and AM = x; MN ^ AC, NP ^ BC; N is on AB. If y = MN + NP , then
B N A
(A) y = 4.
5.
1 2
(5x + 12)
(B) y =
5 x 12 + 12 5
(C) y =
144 - 7 x 12
(B) 4 cm
(C) 5 cm
(D) 3 cm
C
M
(D) y = 12x E
Four parallel lines are cut by two transversals t 1 and t 2 as shown in the given figure. If AB = 2 cm, EF = 3 cm and CD = 2 cm, then length of GH is _____
(A) 2 cm
P
A F B G
C D t 1
H t 2
Which one of the following is correct ? (A) {( 3 7 + 7 3 )( 3 7 + 7 3 - 2)} - 24 = ( 3 7 + 7 3 + 4)( 3 7 + 7 3 - 6) 3 7 3 7 (B) {( 7 + 3 )( 7 + 3 + 2)} + 24 = ( 3 7 + 7 3 + 4)( 3 7 + 7 3 - 6) 3 3 (C) {( 3 7 + 7 3 )( 3 7 + 7 3 + 2)} - 24 = ( 7 + 7 3 - 4)( 7 + 7 3 - 6) 3 3 3 3 7 7 7 7 (D) {( 7 + 3 )( 7 + 3 - 2)} + 24 = ( 7 + 3 - 4)( 7 + 3 + 6)
6.
O is the centre of a circle of diameter 4 cm and OABC is a square. If the 1 shaded area is area of the square, then the side of the square is______ 3 (B) 3p cm (A) p 3 cm (C) 3 p cm
7.
8.
9.
(D) 3p cm
This table shows the relationship between area (a) and width (w) for rectangles that have perimeter of 40 centimetres. Which algebraic equation correctly describes this relationship?
A
O
B
C Area (a ) (cm) 2 Width (w ) (cm) 75 96
5 8
100
10
(A) a = 15 w
(B) a = 10 w + 25
96
12
(C) a = 20 w – w 2
(D) a = 100 – w 2
75
15
Babul visits Japan and Australia on his vacation. The exchange rates between United States dollars and the currencies of the countries he is visiting are shown in the adjoining figure. When he arrives in Australia, he still has 10,500 Japanese yen. How much is this worth in Australian dollars ? (A) 64.72 Australian dollars
(B) 99.53 Australian dollars
(C) 162.23 Australian dollars
(D) 171.97 Australian dollars
The table shown here contains coordinates for two endpoints of a circle's diameter. Which of these points is the centre of the circle? (A) (2, 0)
12 th NSO | LevelI | Class 10
(B) (6, 5)
(C) (1, 5) 2
(D) (0, 5)
x y 2 5 – 2 5
CLASS 10 | 12th NSO - 2009
Sara's Sales 1 2 3 Week Sales Rs. 1920 Rs. 1680 Rs. 3360
10. At an electronics store, Sara earns a 5% commission on her sales. The table here shows her sales for four weeks.
4 Rs. 2640
What was Sara's total commission for these four weeks? (A) Rs. 12
(B) Rs. 40
(C) Rs. 120
11. The table shown here contains pricing information for the chopper (a kitchen tool) that is advertised on television. The price depends on how soon a customer calls after the end of the advertisement.
Minutes (m ) after television advertisement ends
Approximately, how much more would a customer who orders 3 choppers, 23 minutes after the end of the television advertisement pay than a customer who orders 2 choppers, 17 minutes after the advertisement ? (A) Rs. 15
(B) Rs. 35
(D) Rs. 480
0 £ m £ 10 10
