hrt 2
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JEE 2017 3.0HRT2_C Domain: Total Questions:
Engineering 90
Test Code: Total Time:
TST2001RCfI21472 180 min.
Course: Maximum Marks:
IITJEE 2017 360.0
Section Details:
Mathematics Subjects:
Mathematics
Topics: Total Questions:
Trigonometry, Sequences and series, Quadratic Equation 30
Physics Subjects: Topics:
Physics Vectors, Motion in Two Dimensions, Kinematics of Particle
Total Questions:
30
Chemistry Subjects: Chemistry Topics: Periodic table and Properties, Chemical Bonding, Atomic Structure, Stoichiometry Total Questions: 30 General Instructions: 1. This Test contains 90 questions spread across 3 Section(s). 2. There are No Sectional CutOffs but the Student is expected to display his/her performance across all the sections. 3. Section Wise time indicates the Ideal Time which should be given to a particular section. You are free to give more or less time than what is mentioned for a Section, but the Test should be Finished within the Specified time. 4. The Test is to be given in One Single Attempt. Once the Test is Started, it can't be Paused for any Breaks. 5. If the Test is Not completed before the Test Time, then as soon as the Time for the Test is completed, the Test would Automatically End and its Answer file would be generated. 6. Use of Calculators and Log Tables is Not Permitted. 7. Use of Unfair means during the Test is Strictly Prohibited. 8. For fair Result and Performance evaluation, Please Do Not discuss the Test with your peers. 9. Result for the Test can also be accessed on Vidyamandir Website. 10. Marking Scheme: All questions have only one correct option and have +4 marks and 1 will deducted for every wrong answer (Negative marking)
Mathematics Section Title: Mathematics Total No. of Questions: 30
Subjects:Mathematics 1.
If
and a, b, c are rational, then roots of Rational
(A). (C).
(B). (D).
Nonreal
Correct Answer
are : Irrational Cannot be determined
A
Explanation (Subject: Mathematics, Topic : Quadratic Equation). (Marks: 4.0, Negative Marks : 1.0).
2. If
(A).
are roots of
, then
(B).
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(C).
Correct Answer
(D).
D
Explanation
(Subject: Mathematics, Topic : Quadratic Equation). (Marks: 4.0, Negative Marks : 1.0).
3.
If
(A). (C). Correct Answer
and
have a common root and
1 : 2 : 3
(B). (D).
3 : 2 : 1
, then a : b : c = 2 : 1 : 3 1 : 1 : 1
A
Explanation (Subject: Mathematics, Topic : Quadratic Equation). (Marks: 4.0, Negative Marks : 1.0).
4.
Sum of values of p such that
and
(A).
(B).
(C).
(D).
Correct Answer
have a common root is :
B
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Explanation
(Subject: Mathematics, Topic : Quadratic Equation). (Marks: 4.0, Negative Marks : 1.0).
5.
If
to
terms = x, to
to
) then
terms =
(A).
(B).
(C).
(D).
Correct Answer
terms = y (where
C
Explanation
(Subject: Mathematics, Topic : Sequences and series). (Marks: 4.0, Negative Marks : 1.0).
6. If
(A). (C). Correct Answer
are in A.P. then ab, ac, bc are in : AP HP
(B). (D).
GP AGP
A
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Explanation
(Subject: Mathematics, Topic : Sequences and series). (Marks: 4.0, Negative Marks : 1.0).
7. If A be A.M. of a and b and G1 ; G2 be the geometric means between a and b then
(A). (C). Correct Answer
1 4
2
(B). (D).
8
B
Explanation as (Subject: Mathematics, Topic : Sequences and series).
(Marks: 4.0, Negative Marks : 1.0).
8.
Which of the following is true ?
(A). (C). Correct Answer
(B). (D).
B
Explanation
(Subject: Mathematics, Topic : Trigonometry). (Marks: 4.0, Negative Marks : 1.0).
9.
Minimum value of
(A). (C). Correct Answer
4 8
is :
(B). (D).
6 9
D
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Explanation
(Subject: Mathematics, Topic : Trigonometry). (Marks: 4.0, Negative Marks : 1.0).
10.
If
and
(A).
are roots of quadratic equation 16
(B).
(C). Correct Answer
, then
(D).
4
C
Explanation
(Subject: Mathematics, Topic : Trigonometry). (Marks: 4.0, Negative Marks : 1.0).
11.
Number of values of
(A). (C). Correct Answer
4 6
such that
is : 5
(B). (D).
8
C
Explanation
(Subject: Mathematics, Topic : Trigonometry). (Marks: 4.0, Negative Marks : 1.0).
12. (A).
(B).
(C).
(D).
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Correct Answer
B
Explanation
(Subject: Mathematics, Topic : Trigonometry). (Marks: 4.0, Negative Marks : 1.0).
13. , then
(A).
(B).
(C).
(D).
Correct Answer
R
B
Explanation
(Subject: Mathematics, Topic : Quadratic Equation). (Marks: 4.0, Negative Marks : 1.0).
14.
If
(A). (C).
, then R
(B). (D).
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Correct Answer
B
Explanation (Subject: Mathematics, Topic : Quadratic Equation). (Marks: 4.0, Negative Marks : 1.0).
15. If
, then maximum value of
(A). (C).
Correct Answer
1
is : 11
(B). (D).
A
Explanation
(Subject: Mathematics, Topic : Quadratic Equation). (Marks: 4.0, Negative Marks : 1.0).
16.
The condition that the roots of
may be in the ratio m 2 : n2 is :
(A).
(B).
(C).
(D).
Correct Answer
C
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Explanation
(Subject: Mathematics, Topic : Quadratic Equation). (Marks: 4.0, Negative Marks : 1.0).
17.
If
and
then
(A).
(B).
(C).
(D).
Correct Answer
(3, 4)
A
Explanation
(Subject: Mathematics, Topic : Quadratic Equation). (Marks: 4.0, Negative Marks : 1.0).
18.
If one root of the equation
is two times the square of the other root, then :
(A).
(B).
(C).
(D).
Correct Answer
None of these
B
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Explanation
(Subject: Mathematics, Topic : Quadratic Equation). (Marks: 4.0, Negative Marks : 1.0).
19.
Let
denote the sum of the cubes of the first n natural numbers and
denote the sum of first n natural
numbers then
(A).
(B).
(C).
(D).
Correct Answer
C
Explanation
(Subject: Mathematics, Topic : Sequences and series). (Marks: 4.0, Negative Marks : 1.0).
20.
If
(A). (C). Correct Answer
, then 0
(B). (D).
2
3 3
B
Explanation http://75.101.136.78/testHistory.do?actionName=previewTest&testPaperId=8af1086c4ec577e7014ed94b5b743442&testInstanceId=8af1086c4eded2c1014ee362d… 9/38
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(Subject: Mathematics, Topic : Trigonometry).
(Marks: 4.0, Negative Marks : 1.0).
21.
Number of real roots of equation
(A). (C). Correct Answer
2
is : 3
(B). (D).
1
0
A
Explanation
(Subject: Mathematics, Topic : Quadratic Equation). (Marks: 4.0, Negative Marks : 1.0).
22.
Minimum value of expression
occurs at x =
(A).
(B).
(C).
(D).
Correct Answer
C
Explanation (Subject: Mathematics, Topic : Quadratic Equation). (Marks: 4.0, Negative Marks : 1.0).
23.
If
then quadratic equation whose roots are
(A).
(B).
(C).
(D).
is :
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Correct Answer
B
Explanation
(Subject: Mathematics, Topic : Quadratic Equation). (Marks: 4.0, Negative Marks : 1.0).
24. Range of the expression
is :
(A).
(B).
[4, 10]
(D).
[
,
(C).
[
Correct Answer
C
, 10]
, 11]
Explanation
(Subject: Mathematics, Topic : Trigonometry). (Marks: 4.0, Negative Marks : 1.0).
25.
Number of points of intersection of two curves
(A). (C). Correct Answer
0 2
and
(B). (D).
is : 1 Infinite
A
Explanation (Subject: Mathematics, Topic : Trigonometry). (Marks: 4.0, Negative Marks : 1.0).
26.
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(A).
(B).
(C).
(D).
Correct Answer
D
Explanation (Subject: Mathematics, Topic : Sequences and series). (Marks: 4.0, Negative Marks : 1.0).
27.
If the roots of equation
(A). (C). Correct Answer
2 2
be two consecutive integers, then 1
(B). (D).
3
B
Explanation (Subject: Mathematics, Topic : Quadratic Equation). (Marks: 4.0, Negative Marks : 1.0).
28.
If
is a factor of
then values of p and q are :
(A). (C).
Correct Answer
(B). (D).
5, 4
B
Explanation
(Subject: Mathematics, Topic : Quadratic Equation).
and
(Marks: 4.0, Negative Marks : 1.0).
29. The H.M. of roots of equation
(A). (C).
2 6
is :
(B). (D).
4 8
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Correct Answer
B
Explanation H.M.
(Subject: Mathematics, Topic : Sequences and series). (Marks: 4.0, Negative Marks : 1.0).
30.
General solution of equation
is
(A).
(B).
(C).
(D).
Correct Answer
A
Explanation
(Subject: Mathematics, Topic : Trigonometry). (Marks: 4.0, Negative Marks : 1.0).
Physics Section Title: Physics Total No. of Questions: 30
Subjects:Physics 31.
If
are 2 vectors, then the value of
is :
(A).
(B).
(C).
(D).
Correct Answer Explanation
A
= (Subject: Physics, Topic : Vectors).
=
=
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32.
Three vectors which are coplanar with respect to a certain rectangular coordinate system are given by ,
,
Find the angle between
.
(A).
(B).
(C).
(D).
Correct Answer
B
Explanation
(Subject: Physics, Topic : Vectors). (Marks: 4.0, Negative Marks : 1.0).
33.
A ball is thrown upwards from the ground with an initial speed of u. The ball is at a height of 80 m at two times. The time interval being 6s between these two points. Find 'u'. Take g = 10 m/s2.
(A). (C). Correct Answer
40 m/s 50 m/s
(B). (D).
55 m/s 45 m/s
C
Explanation
(Subject: Physics, Topic : Kinematics of Particle). (Marks: 4.0, Negative Marks : 1.0).
34.
Aparticle is projected vertically upwards with velocity 40 m/s. The displacement and distance traveled by the particle in 6 sec is :
(A). (C).
50 m, 100 m 60 m, 110 m
(B). (D).
50 m, 110 m 60 m, 100 m
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(C).
60 m, 110 m
Correct Answer
D
(D).
60 m, 100 m
Explanation
(Subject: Physics, Topic : Kinematics of Particle). (Marks: 4.0, Negative Marks : 1.0).
35.
Velocity of particle at any time t is
(A). (C).
Correct Answer
. Find displacement at t = 1 sec.
7 m
(B). (D).
5 m
D
Explanation
(Subject: Physics, Topic : Motion in Two Dimensions). (Marks: 4.0, Negative Marks : 1.0).
36.
Which of the following graphs are NOT possible ?
(A).
(i), (ii) and (iv)
(B).
(i), (ii), (iii) and (iv)
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(A).
(i), (ii) and (iv)
(B).
(i), (ii), (iii) and (iv)
(C).
(i), (ii) and (iii)
(D).
(ii) and (iii)
Correct Answer
C
Explanation
A body can not have 2 velocities at one time. And its velocity cannot increase infinitely at a particular instant.
So (i), (ii) and (iii) are not possible. (Subject: Physics, Topic : Kinematics of Particle).
(Marks: 4.0, Negative Marks : 1.0).
PASSAGE An open lift is moving upward with velocity 10 m/s. It has an upward acceleration of 2 m/s2. A ball is projected upward with velocity 20 m/s relative to the ground. (Subject: Physics, Topic : Kinematics of Particle).
37.
The time when ball again meets the lift
(A). (C). Correct Answer
5/3 s
(B). (D).
1 sec
7/3 s 2 sec
A Position of ball when it hits the lift floor Position of lifts floor when ball hits it.
Explanation Both the final position should be same (initial position of ball = Xib= 0 and initial position of lift floor ]
(Marks: 4.0, Negative Marks : 1.0).
38.
Displacement of lift and ball at that instant (when it hits again)
(A). (C).
18.4 m
Correct
B
17.4 m
(B). (D).
19.4 m 20.4 m
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Answer Explanation =
(Marks: 4.0, Negative Marks : 1.0).
39.
Distance traveled by the ball upto that instant. (Take g = 10 m/s2)
(A). (C). Correct Answer
18.4 m 36.8 m
19.4 m
(B). (D).
38.8 m
B
Explanation (Marks: 4.0, Negative Marks : 1.0).
40.
An aircraft files at 400 km/h in still air. A wind of km/h is blowing from the south. The pilot wishes to travel from A to a point B northeast of A. Find the direction in which the pilot should steer the plane.
(A).
East of North
(C).
Correct Answer
North of East
(B). (D).
East of North North of East
A
Explanation
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(Subject: Physics, Topic : Vectors). (Marks: 4.0, Negative Marks : 1.0).
41.
Two particles A and B start moving simultaneously along the joining them in the same direction with acceleration of 1 m/s2 and 2 m/s2 and initial speed 3 m/s and 1 m/s respectively. Initially A is 10 m behind B. What is the minimum distance between them?
(A). (C). Correct Answer
4 m 8 m
(B). (D).
0 m 10 m
C
VA = 3 ms VB = 1 m/s aA = 1 m/s2 aB = 2 m/s Let the initial position of A be at x = 0 So B is located at x = 10 at t = 0 Final position of A
Final position of B
Explanation
So the distance between them at any time
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So For 'h' to be minimum t = 2 sec. At t = 2 sec h will be minimum
So
.
(Subject: Physics, Topic : Kinematics of Particle). (Marks: 4.0, Negative Marks : 1.0).
PASSAGE A man crosses a River in a boat. If he crosses the river in minimum time, he takes 10 min with a drift of 120 m. If he crosses the river taking shortest path, he takes 12.5 min. (Subject: Physics, Topic : Vectors).
42.
The width of river is :
(A). (C). Correct Answer
200 m 250 m
(B). (D).
300 m 150 m
A
Explanation
(Marks: 4.0, Negative Marks : 1.0).
43.
Velocity of Boat in still water
(A). (C).
12 m/min 40 m/min
(B). (D).
20 m/min 24 m/min
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(C).
40 m/min
Correct Answer
B
(D).
24 m/min
Explanation
(Marks: 4.0, Negative Marks : 1.0).
44.
The speed of River current :
(A). (C). Correct Answer
24 m/min 20 m/min
(B). (D).
40 m/min 12 m/min
D
Explanation
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(Marks: 4.0, Negative Marks : 1.0).
45.
The motion of a particle along a straight line is described by the function in seconds. The velocity of particle at t = 2 sec is:
(A). (C). Correct Answer
8 m/s 5 m/s
(B). (D).
, where X is in metre and 't'
6 m/s 4 m/s
D
Explanation
(Subject: Physics, Topic : Kinematics of Particle). (Marks: 4.0, Negative Marks : 1.0).
46.
Two boats A and B having same speed in still water are moving in a river. A moves normal to river current as observed from ground. B moves normal to river current as observed from River frame. In this context which of the following are true. I. For a ground observer, B is moving faster than A. II. For a ground observer A and B are moving with same speed. III. For an observer in river frame, B is moving faster than A. IV. For an observer in river frame A and B are moving with same speed.
(A). (C).
I and II II and III
(B). (D).
I and IV II and IV
Correct B Answer Explanation NA (Subject: Physics, Topic : Vectors). (Marks: 4.0, Negative Marks : 1.0).
47.
The acceleration of a particle is increasing linearly with time 't' as bt. The particle starts from the origin with an initial velocity V0. The distance traveled by the particle in time 't ' will be :
(A).
(B).
(C).
(D).
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Correct Answer
A
Explanation
(Subject: Physics, Topic : Kinematics of Particle). (Marks: 4.0, Negative Marks : 1.0).
48.
The horizontal and vertical displacement of a particle moving along a curved line are given by x = 5t and . Time after which its velocity vector makes an angle of
(A). (C). Correct Answer
0.5 sec 2 sec
(B). (D).
with the horizontal is : 1 sec 1.5 sec
D
Explanation
(Subject: Physics, Topic : Motion in Two Dimensions). http://75.101.136.78/testHistory.do?actionName=previewTest&testPaperId=8af1086c4ec577e7014ed94b5b743442&testInstanceId=8af1086c4eded2c1014ee362… 22/38
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(Marks: 4.0, Negative Marks : 1.0).
49.
'S' hits a ball along the ground with speed 'u' in the direction which makes an angle and the fielder 'P '. P runs to intercept the ball with a speed ball.
. At what angle
(A).
(B).
(C).
(D).
Correct Answer
with the line joining him should he run to intercept the
C
When the fielder intercepts the ball, the Xcomponent and Ycomponent of position will be same
Explanation
(Subject: Physics, Topic : Motion in Two Dimensions).
(Marks: 4.0, Negative Marks : 1.0).
50.
The angle of projection of a projectile for which the horizontal range and maximum height are equal is :
(A).
(B).
(C).
(D).
Correct Answer
A
Explanation
(Subject: Physics, Topic : Motion in Two Dimensions). http://75.101.136.78/testHistory.do?actionName=previewTest&testPaperId=8af1086c4ec577e7014ed94b5b743442&testInstanceId=8af1086c4eded2c1014ee362… 23/38
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(Marks: 4.0, Negative Marks : 1.0).
51.
A particle is projected with an angle with horizontal with a speed V = 20 m/s. The time after which the speed of the particle remains half of its initial speed is : [g = 10 m/s2]
(A).
(B).
(C).
2 sec
Correct Answer
B
(D).
3 sec
Explanation
(Subject: Physics, Topic : Motion in Two Dimensions). (Marks: 4.0, Negative Marks : 1.0).
52.
Two particles 'A' and 'B' are projected simultaneously in the directions shown in figure with velocities VA = 20 m/s and VB = 10 m/s respectively. They collide in air after
.The separation 'X' is :
(A).
(B).
(C).
(D).
Correct Answer
A
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Explanation
(Subject: Physics, Topic : Motion in Two Dimensions). (Marks: 4.0, Negative Marks : 1.0).
53.
The time of flight and range of the projectile along the inclined plane as shown in figure is: [g = 10 m/s2 and ]
(A). (C). Correct Answer
8.3 sec and 166 m 7.3 sec and 156 m
(B). (D).
6.3 sec and 146 m 5.3 sec and 136 m
B
Explanation = (Subject: Physics, Topic : Motion in Two Dimensions).
(Marks: 4.0, Negative Marks : 1.0).
54.
A particle is fired horizontal from an inclined plane of inclination Range along the incline is: [g = 10 m/s2]
(A).
500 m
(C).
Correct Answer
with horizontal with speed
. The
(B). (D).
D
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Explanation
(Subject: Physics, Topic : Motion in Two Dimensions). (Marks: 4.0, Negative Marks : 1.0).
55.
If T1 and T2 are the times of flight for complementary angles of projection. Then the Range (R) is :
(A). (C).
Correct Answer
4g T1T2
(B). (D).
2g T1T2
C
Explanation
(Subject: Physics, Topic : Motion in Two Dimensions).
(Marks: 4.0, Negative Marks : 1.0).
56.
A particle has initial velocity :
(A). (C). Correct Answer
and a constant force
Straight line Circular
(B). (D).
acts on it. The path of the particle is
Parabolic Elliptical
B It can be assumed that a projectile thrown from a height in horizontal direction. So, initial velocity
Explanation and forces are perpendicular so it executes a parabolic path. (Subject: Physics, Topic : Motion in Two Dimensions).
(Marks: 4.0, Negative Marks : 1.0).
57.
A gun is mounted on an stand. The gun can rotate about the stand in horizontal plane. The firing velocity of bullet is V0. The maximum area covered by the bullet is :
(A).
(B).
(C).
(D).
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Correct Answer
C
Explanation
(Subject: Physics, Topic : Motion in Two Dimensions). (Marks: 4.0, Negative Marks : 1.0).
PASSAGE In the projectile motion shown in figure time of travel from A to B is = 2s [g = 10 m/s2]
(Subject: Physics, Topic : Motion in Two Dimensions).
58.
The particle reaches point B in :
(A). (C). Correct Answer
2 sec 4 sec
(B). (D).
3 sec 3.5 sec
B
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Explanation
(Marks: 4.0, Negative Marks : 1.0).
59.
Maximum height reached by the projectile is :
(A). (C). Correct Answer
15 m 20 m
(B). (D).
25 m 30 m
C
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Explanation
(Marks: 4.0, Negative Marks : 1.0).
60.
Horizontal and vertical component of velocity are :
(A). (C).
Correct Answer
20 m/s, 20 m/s 25 m/s, 20 m/s
(B). (D).
20 m/s, 25 m/s
A
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Explanation
(Marks: 4.0, Negative Marks : 1.0).
Chemistry Section Title: Chemistry Total No. of Questions: 30
Subjects:Chemistry 61.
The frequency of first line of Balmer series in hydrogen atom is singly ionized He atom is :
(A). (C).
. The frequency of corresponding line emitted by
(B). (D).
Correct B Answer Explanation NA (Subject: Chemistry, Topic : Atomic Structure). (Marks: 4.0, Negative Marks : 1.0).
62.
Which of the following sets of quantum number is(are) not permitted ?
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I.
II.
III.
IV.
(A). (C).
I and II only II and III only
(B). (D).
I, II and III only III and IV only
Correct B Answer Explanation NA (Subject: Chemistry, Topic : Atomic Structure). (Marks: 4.0, Negative Marks : 1.0).
63.
A sulphide of vanadium has a magnetic moment equal to 1.73 BM. Its formula is :
(A).
(B).
(C).
(D).
Correct D Answer Explanation NA (Subject: Chemistry, Topic : Atomic Structure). (Marks: 4.0, Negative Marks : 1.0).
64.
Which of the following pairs of ions have the same electronic configuration ?
(A).
(B).
(C).
(D).
Correct B Answer Explanation NA (Subject: Chemistry, Topic : Atomic Structure). (Marks: 4.0, Negative Marks : 1.0).
65.
The de Broglie wavelength of electron in first Bohr orbit is exactly equal to :
(A). (C). Correct Answer
half the circumference of the orbit twice the circumference of the orbit
(B). (D).
equal to the circumference of the orbit thrice the circumference of the orbit
B NA
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Explanation
NA
(Subject: Chemistry, Topic : Atomic Structure). (Marks: 4.0, Negative Marks : 1.0).
66.
The number of concentric spherical surfaces for 3s orbital at which the probability of finding the electron is zero, are :
(A). (C).
0 2
(B). (D).
1 3
Correct C Answer Explanation NA (Subject: Chemistry, Topic : Atomic Structure). (Marks: 4.0, Negative Marks : 1.0).
67.
Which of the following sets of three quantum numbers (n, I and m) that does not give permissible solution of Schrodinger wave equation.
(A). (C).
3, 2, 2 4, 3, 2
(B). (D).
4, 2, 0 4, 2, 3
Correct D Answer Explanation NA (Subject: Chemistry, Topic : Atomic Structure). (Marks: 4.0, Negative Marks : 1.0).
68.
PCl5 exists but NCl5 does not because :
(A). (C).
Nitrogen has no vacant dorbitals Nitrogen atom is much small
(B). (D).
NCl5 in unstable Nitrogen is highly inert
Correct A Answer Explanation NA (Subject: Chemistry, Topic : Chemical Bonding). (Marks: 4.0, Negative Marks : 1.0).
69.
The state of hybridization of Xe in XeF4 is :
(A). (C).
sp2 sp3d
(B). (D).
sp3 sp3 d2
Correct D Answer Explanation NA http://75.101.136.78/testHistory.do?actionName=previewTest&testPaperId=8af1086c4ec577e7014ed94b5b743442&testInstanceId=8af1086c4eded2c1014ee362… 32/38
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(Subject: Chemistry, Topic : Chemical Bonding). (Marks: 4.0, Negative Marks : 1.0).
70.
Carbon atoms in C2(CN)4 are :
(A). (C).
sphybridised spand sp2hybridised
(B). (D).
sp2hybridised sp, sp2 and sp3hybridised
Correct C Answer Explanation NA (Subject: Chemistry, Topic : Chemical Bonding). (Marks: 4.0, Negative Marks : 1.0).
71.
Molecular shapes of SF4, CF4 and XeF4 are :
(A). (C).
the same, with 2, 0 and 1 lone pair of electrons, respectively different, with 0, 1 and 2 lone pair of electrons, respectively
(B). (D).
the same, with 1, 1 and 1 lone pair of electrons, respectively different, with 1, 0 and 2 lone pair of electrons, respectively
Correct D Answer Explanation NA (Subject: Chemistry, Topic : Chemical Bonding). (Marks: 4.0, Negative Marks : 1.0).
72.
The hybridization of atomic orbitals of nitrogen in
and
(A). (C).
(B). (D).
sp, sp3 and sp2 respectively sp2, sp and sp3 respectively
are : sp, sp2 and sp3 respectively sp2, sp3 and sp respectively
Correct B Answer Explanation NA (Subject: Chemistry, Topic : Chemical Bonding). (Marks: 4.0, Negative Marks : 1.0).
73.
Amongst LiCl, BeCl2, MgCl2 and RbCl the compounds with greatest and least ionic character, respectively are :
(A). (C).
LiCl and RbCl RbCl and MgCl2
(B). (D).
RbCl and BeCl2 MgCl2 and BeCl2
Correct B Answer Explanation NA http://75.101.136.78/testHistory.do?actionName=previewTest&testPaperId=8af1086c4ec577e7014ed94b5b743442&testInstanceId=8af1086c4eded2c1014ee362… 33/38
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(Subject: Chemistry, Topic : Chemical Bonding). (Marks: 4.0, Negative Marks : 1.0).
74.
The hybridization of P in
(A). (C).
is same as in :
(B).
I in
(D).
N in
S in S in
Correct D Answer Explanation NA (Subject: Chemistry, Topic : Chemical Bonding). (Marks: 4.0, Negative Marks : 1.0).
75.
A partially dried clay mineral contains 8% water. The original sample contained 12% water and 45% silica. The % of silica in the partially dried sample is nearly :
(A). (C).
50%
(B). (D).
55%
45% 47%
Correct D Answer Explanation NA (Subject: Chemistry, Topic : Stoichiometry). (Marks: 4.0, Negative Marks : 1.0).
76.
5 ml of 1N HCl, 20 ml of N/2 H2SO4 and 30 ml of N/3 HNO3 are mixed together and the volume made up to 1 litre. The normality of the resulting solution in terms of
(A). (C).
N/5 N/20
is :
(B). (D).
N/10 N/40
Correct D Answer Explanation NA (Subject: Chemistry, Topic : Stoichiometry). (Marks: 4.0, Negative Marks : 1.0).
77.
Amongst the following elements (whose electronic configurations are given below), the one having the highest ionization energy is :
(A). (C).
[Ne] 3s2 3p1
Correct
B
[Ne] 3s2 3p2
(B). (D).
[Ne] 3s2 3p3 [Ne] 3d10 4s2 4p3
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Answer Explanation NA (Subject: Chemistry, Topic : Periodic table and Properties). (Marks: 4.0, Negative Marks : 1.0).
78.
The first ionization potential of Na, Mg, Al and Si are in the order
(A). (C).
Na Al Mg > Al
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