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...01...Class : XI/G6 1
Space for Rough Work
PHYSICS
funsZ'k1. Instructions regarding filling of OMR Sheet are
mentioned on the OMR Sheet Only.2. The duration of the exam is 2 Hours.3. The Question Booklet consists of 100 questions,
each of them is of 4 Marks. The maximum Marksare 400.
4. Subject wise division of 100 Questions are asfollows : Physics50, Chemistry50.
5. Candidates will be awarded 4 Marks for indicatedcorrect response of each question.
6. One mark will be deducted for incorrect responseof each question.
7. Space for rough work is also provided in theQuestion Booklet.
1.
2.3. 100 4
400
4. 100 50, 50.
5. 4
6. 1
7.
01. Two boats start from mid point of river in case (i) and inmid point of pond of still water in case (ii).If all velocity shown in figure are relative to water thenmark the correct option about time taken to reach thenearest bank.
��
��
A C
RiverFlow
Case (i) Case (ii)
Still water
dd
B D
v v
v v
(1) Boat A takes least time(2) Boat B takes maximum time(3) All the four boats A,B,C and D take same time(4) Time of reaching bank can not be compared.
01. (i) (ii)
��
��
A C
RiverFlow
Case (i) Case (ii)
Still water
dd
B D
v v
v v
(1) A (2) B (3) A,B,C D (4)
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...01...Class : XI/G6 2
Space for Rough Work
02. A shot is fired at an angle � to the horizontal such that it
strikes the hill while moving horizontally Find initial angle
of projection �.
� 37°
(1) tan � = 5
2(2) tan � =
8
3
(3) tan � = 2
3(4) None of these
03. A particle moves in x-y coordinate system such that its
position coordinates are gives as ĵtsin4îtsin2r ���
,
The path of the particle is:
(1) straight line (2) parabola
(3) circular (4) ellipse
04. Can an object maintain uniform velocity when its
acceleration is not zero?
(1) no, impossible
(2) yes, but only if the acceleration is in the direction of
the velocity
(3) yes, but only if the acceleration is opposite to the
direction of the velocity
(4) yes, if the acceleration is perpendicular to the
velocity.
02. �
�
� 37°
(1) tan � = 5
2(2) tan � =
8
3
(3) tan � = 2
3(4)
03. x-y
ĵtsin4îtsin2r ���
,
(1) (2)
(3) (4)
04.
(1)
(2)
(3)
(4)
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...01...Class : XI/G6 3
Space for Rough Work
05. A particle has an initial velocity of ˆ ˆ4i 4jm / s� and an
acceleration of ˆ0.4 i� m/s2 , at what time will its
speed be 5 m/s?
(1) 2.5 sec (2) 17.5 sec
(3) 27 sec (4) 8.5 sec
06. A particle is projected with a velocity u, at an angle
�, with the horizontal. At what time its vertical
component of velocity becomes half of its net speed
at the highest point?
(1) g2
u
(2) g2
u(sin� – cos�)
(3) g2
u(2 cos� – sin�)
(4) g2
u(2sin� – cos�)
07. If b,a��
and c�
are unit vectors such that
0cba����
��� , then the angle between a�
and b�
is
(1) ��� (2) ���(3) 90° (4) ����
08. Sum of two unit vectors is a unit vector. What ismagnitude of their vector difference
(1) 2 (2) 3
(3) 2
1(4) 5
05. t = 0 ˆ ˆ4i 4jm / s�
ˆ0.4 i� m/s2 5 m/s
(1) 2.5 sec (2) 17.5 sec
(3) 27 sec (4) 8.5 sec
06. �� u
(1) g2
u
(2) g2
u(sin� – cos�)
(3) g2
u(2 cos� – sin�)
(4) g2
u(2sin� – cos�)
07. b,a��
c�
0cba����
��� a�
b�
(1) ��� (2) ���
(3) 90° (4) ����
08.
(1) 2 (2) 3
(3) 2
1(4) 5
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...01...Class : XI/G6 4
Space for Rough Work
09. A plumber steps out of his truck, walks 60 m east and
35 m south and then takes an elevator, 12 m down to the
basement of a building where a bad leak is occurring.
Assume x axis is east ; y-axis is north and z-axis is up,
displacement of plumber is expressed conventionally as
(1) k̂12ĵ35î60 �� (2) k̂12ĵ35î60 ���(3) k̂12ĵ35î60 ��� (4) k̂12ĵ35î60 ��
10. A force k̂ĵ2î5F ����
displaces a body from a point
of coordinate (1, 1, 1) to another point of coordinates
(2, 0, 3). Calculate the work done by the force.
(1) 2 (2) 3
(3) 4 (4) 5
11. The hour hand of a clock is 6 cm long. The magnitude of
the displacement of the tip of hour hand between
1:00 pm to 5:00 pm. is :
(1) 6 cm (2) 36 cm
(3) 12 cm (4) 33 cm
12. A particle moves along a straight line and its position as
function of time is given by x = t3 – 3t2 + 3t + 3 then
particle
(1) stops at t = 1s and reverses its direction of motion
(2) stops at t = 1s and continues further without change
of direction
(3) stops at t = 2s and reverses its direction of motion
(4) stops at t = 2s and continues further without change
of direction
09. 60 m 35 m
12 m
x- y-
z-
(1) k̂12ĵ35î60 �� (2) k̂12ĵ35î60 ���(3) k̂12ĵ35î60 ��� (4) k̂12ĵ35î60 ��
10. k̂ĵ2î5F ����
(1, 1, 1) (2, 0, 3)
(1) 2 (2) 3
(3) 4 (4) 5
11. 6 cm 1:00 pm 5:00 pm
(1) 6 cm (2) 36 cm
(3) 12 cm (4) 33 cm
12.
x = t3 – 3t2 + 3t + 3
(1) t = 1s
(2) t = 1s
(3) t = 2s
(4) t = 2s
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...01...Class : XI/G6 5
Space for Rough Work
13. A body is released from the top of a tower of height h .It takes t sec to reach the ground. Where will be the ball
after time t
2 sec
(1) At h
2from the ground
(2) At h
4 from the ground
(3) Depends upon mass and volume of the body
(4) At 3h
4 from the ground
14. A ball hits a wall and rebounds with the same speed, as
diagramed below. The changes in the components of the
momentum of the ball are:
y
��
x
(1) �px > 0, �py > 0
(2) �px = 0, �py > 0
(3) �px < 0, �py > 0
(4) �px = 0, �py < 0
13. ht
t
2
(1)h
2
(2)h
4
(3)
(4)3h
4
14.
y
��
x
(1) �px > 0, �py > 0
(2) �px = 0, �py > 0
(3) �px < 0, �py > 0
(4) �px = 0, �py < 0
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...01...Class : XI/G6 6
Space for Rough Work
15. An air plane is observed to move from A to B from
ground, as shown in figure. The successive positions are
shown at regular time intervals during which airplane does
not change its orientation. Which of the following arrows
can not represent direction of blowing wind–
N
E
S
W A
B
(1) (2)
(3) (4) None of these
16. Figure shows four possible trajectories of a kicked
football. Ignoring air resistance, rank the curves
according to the initial horizontal velocity component the
highest first–
1 2 3 4x
y
O(1) 1, 2, 3, 4 (2) 1, 3, 2, 4
(3) 3, 4, 1, 2 (4) 4, 3, 2, 1
15. A B
N
E
S
W A
B
(1) (2)
(3) (4)
16.
1 2 3 4x
y
O
(1) 1, 2, 3, 4 (2) 1, 3, 2, 4
(3) 3, 4, 1, 2 (4) 4, 3, 2, 1
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...01...Class : XI/G6 7
Space for Rough Work
17. A frictionless wire AB is fixed on a sphere of radius R.
A very small spherical ball slips on this wire. The time
taken by this ball to slip from A to B is
B
A
O
R
�
C
(1)�cos
2
g
gR(2) g
gR�cos
.2
(3) gR
2 (4) �cosggR
18. The distance traveled by an object is given by
x = at + )ac(
bt2
� where t is time and a, b, c are constants.
The dimensions of b and c respectively are–
(1) [LT–2], [LT–1] (2) [L2T–3], [LT–1]
(3) [LT–1], [L2T–1] (4) [LT–1], [LT–2]
19. Which of the following is not one of the seven
fundamental SI units–
(1) Henry (2) Ampere
(3) Candela (4) Mole
20. The dimensions of G (Gravitational constant)are–
(1) [ML3T–2] (2) [M–1LT–2]
(3) [M–1L3T–2] (4) [M–1L3T–1 ]
17. R A B
A B
B
A
O
R
�
C
(1)�cos
2
g
gR(2) g
gR�cos
.2
(3) gR
2 (4) �cosggR
18. x = at + )ac(
bt2
�
t a, b, c b c
(1) [LT–2], [LT–1] (2) [L2T–3], [LT–1]
(3) [LT–1], [L2T–1] (4) [LT–1], [LT–2]
19. SI
(1) (2)
(3) (4)
20. G ( )
(1) [ML3T–2] (2) [M–1LT–2]
(3) [M–1L3T–2] (4) [M–1L3T–1 ]
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...01...Class : XI/G6 8
Space for Rough Work
21. A body starts from origin and moves along x axis such that
at any instant velocity is vt = 4t3 – 2t where t is in second
and vt is in ms–1. The acceleration of the particle when
it is 2 m from the origin is–
(1) 28 ms–2 (2) 22 ms–2
(3) 12 ms–2 (4) 10 ms–2
22. A body moves with velocity v = ( �n x) m/s where x is itsposition. The net force acting on body is zero at–
(1) x = 0 m (2) x = e2 m
(3) x = e m (4) x = 1 m
23. Force acting on a body of mass 1 kg is related to itsposition x as F = x3 – 3x N. It is at rest at x = 1. Itsvelocity at x = 3 can be–
(1) 4 m/s (2) 3 m/s
(3) 2 m/s (4) 5 m/s
24. Two vectors b&a��
are varying with time as�
= 3t � + 4t2 � & �
= (6t + 3) � + (7 sint) � . Find themagnitude of the rate of change of
� �a b. at
t = �/2 second–
(1) 46� + 9 (2) 44� + 9
(3) 40� + 9 (4) 38� + 9
25. A force of 40N is responsible for the motion of a body
governed by the equation s=2t+2t2 where s is in metres
and t in sec. What is the momentum of the body at
t = 2 second–
(1) 400 kgm/s (2) 200 kgm/s
(3) 300 kgm/s (4) 100 kgm/s
21. x
vt = 4t3 – 2t
t vt ms–1
2 m
(1) 28 ms–2 (2) 22 ms–2
(3) 12 ms–2 (4) 10 ms–2
22. v = ( �n x) m/s x
(1) x = 0 m (2) x = e2 m
(3) x = e m (4) x = 1 m
23.x F = x3 – 3x N x = 1
x = 3
(1) 4 m/s (2) 3 m/s
(3) 2 m/s (4) 5 m/s
24. ba��k;
�= 3t � + 4t2 �
� = (6t + 3) � + (7 sint) � ,
t = �/2 sec� �a b.
(1) 46� + 9 (2) 44� + 9
(3) 40� + 9 (4) 38� + 9
25. 40N
s=2t+2t2 s t t = 2
(1) 400 kgm/s (2) 200 kgm/s
(3) 300 kgm/s (4) 100 kgm/s
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...01...Class : XI/G6 9
Space for Rough Work
26. The co-ordinates of a moving particle at a time t, are given
by, x = 5 sin 10 t, y = 5 cos 10 t . The speed of the particle at
time t is–
(1) 25 (2) 50
(3) 10 (4) 50 227. A particle is thrown upwards from ground. It
experiences a constant resistance force which can
produce retardation 2 m/s2. The ratio of time of ascent
to the time of descent is– [g = 10 m/s2]
(1) 1 : 1 (2) 3
2
(3) 3
2(4)
2
3
28. The drawing shows velocity (v) versus time (t) graphs
for two cyclists moving along the same straight segment
of a highway from the same point. The second cyclist
starts moving at t = 3 min.At what time do the two
cyclists meet–
(1) 4 min (2) 6 min
(3) 8 min (4)12 min
26. t x = 5 sin
10 t, y = 5 cos 10 t t
(1) 25 (2) 50
(3) 10 (4) 50 227.
2 m/s2
[g = 10 m/s2]
(1) 1 : 1 (2) 3
2
(3) 3
2(4)
2
3
28.
(v) (t)
t = 3 min.
(1) 4 min (2) 6 min
(3) 8 min (4)12 min
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...01...Class : XI/G6 10
Space for Rough Work
29. A boat is able to move through still water at 20 m/s.
It makes a round trip to a town 3.0 km upstream. If
the river flows at 5 m/s, the time required for this
round trip is–
(1) 120 s (2) 150 s
(3) 200 s (4) 320 s
30. To man running at a speed of 5 m/sec,the rain drops
appear to be falling at an angle of 45° from the vertical.
If the rain drops are actually falling vertically
downwards, then velocity in m/sec is–
(1) 5 (2) 5 3
(3) 5 2 (4) 4
31. Initially car A is 10.5 m ahead of car B. Both start moving
at time t = 0 in the same direction along a straight line.
The velocity time graph of two cars is shown in figure.
The time when the car B will catch the car A, will be–
(1) t = 21 sec (2) t = 52 sec
(3) 20 sec (4) None
29. 20 m/s
3.0 km
5 m/s
(1) 120 s (2) 150 s
(3) 200 s (4) 320 s
30. 5 m/sec
45°
(1) 5 (2) 5 3
(3) 5 2 (4) 4
31. A, B 10.5 m t = 0
B, A
(1) t = 21 sec (2) t = 52 sec
(3) 20 sec (4)
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...01...Class : XI/G6 11
Space for Rough Work
32. A particle of mass 1 kg is acted upon by a force 'F' which
varies as shown in the figure. If initial velocity of the
particle is 10 ms–1, the maximum velocity attained by the
particle during the period is–
(1) 210 ms–1
(2) 110 ms–1
(3) 100 ms–1
(4) 90 ms–1
33. If the distance 's' travelled by a body in time 't' is given
by s = a
t + bt2 then the acceleration equals–
(1) 2
3
a
t + 2b (2)
22
s
t
(3) 2b – 2
3
a
t(4)
s
t 2
34. Momentum of a body moving in a straight line is
p = ( t2 + 2t + 1) kg m/s. Force acting on a body at
t = 2 second.
(1) 6 N (2) 8 N
(3) 4 N (4) 2 N
32. 1 kg 'F'
10 ms–1
(1) 210 ms–1
(2) 110 ms–1
(3) 100 ms–1
(4) 90 ms–1
33. 't'
s = a
t + bt2
(1) 2
3
a
t + 2b (2)
22
s
t
(3) 2b – 2
3
a
t(4)
s
t 2
34. p = ( t2 + 2t + 1) kg
m/s. t = 2
(1) 6 N (2) 8 N
(3) 4 N (4) 2 N
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...01...Class : XI/G6 12
Space for Rough Work
35. Which of the following pairs have same dimensions–
(1) work and angular momentum
(2) light year and wavelength
(3) stress and work
(4) energy and modulus of elasticity
36. A gas bubble oscillates with a time period T proportional
to Pa db Ec where P is pressure, d is the density and E is
the energy. The values of a, b & c are–
(1) a = 2
3 , b = �
3
1 , c = –
2
1
(2) a = � 6
5 , b =
3
1 , c =
2
1
(3) a = � 6
5, b =
2
1, c =
3
1
(4) a = 2
3, b = �
3
1, c =
2
1
35.
(1)
(2)
(3)
(4)
36. T
Pa db Ec P = d =
E = a, b, c
(1) a = 2
3 , b = �
3
1 , c = –
2
1
(2) a = � 6
5 , b =
3
1 , c =
2
1
(3) a = � 6
5, b =
2
1, c =
3
1
(4) a = 2
3, b = �
3
1, c =
2
1
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...01...Class : XI/G6 13
Space for Rough Work
37. Two similar cannon simultaneously fires two identical
cannon balls at target 1 and 2 as shown in the figure. If
the cannon balls have identical initial speeds, which of the
following statements is true–
(1) Target 2 is hit before target 1
(2) Target 1 is hit before target 2
(3) Both balls are hit at the same time
(4) information is insufficient
38. A stationary man observes that the rain strikes him at an
angle 60° to the horizontal. When he begins to move with
a velocity of 25 m/s then the drops appear to strike him
at an angle of 30° from horizontal. the velocity of the rain
drops is–
(1) 25 m/s
(2) 50 m/s
(3) 12.5 m/s
(4) 224 m/s
37. (cannon)
1 2
(1) 2 1
(2) 1 2
(3)
(4)
38. 60°
25 m/s
30°
(1) 25 m/s
(2) 50 m/s
(3) 12.5 m/s
(4) 224 m/s
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...01...Class : XI/G6 14
Space for Rough Work
39. A man travelling in car with a maximum constant speedof 20 m/s watches the friend start off at a distance100 m ahead on a motor cycle with constant acceleration‘a’. The maximum value of ‘a’ for which the man in thecar can reach his friend is–
av
100 m(1) 2 m/s2 (2) 1 m/s2
(3) 4 m/s2 (4) None of these
40. A particle travels along a curved path between two pointsP and Q. P and Q are not shown in figure. Displacement
of particle does not depend upon–
(1) The location of P and Q
(2) The length of line joining P and Q
(3) The direction of Q from P
(4) The choice of origin
41. The direction of three forces 1N, 2N and 3N acting at apoint are parallel to the sides of an equilateral triangle
taken in order. The magnitude of their resultant is–
(1) 3 N (2) N2
3
(3) N2
3(4) zero
39. 20 m/s 100 m
‘a’ ‘a’
av
100 m(1) 2 m/s2 (2) 1 m/s2
(3) 4 m/s2 (4)
40. P Q P
Q
(1) P Q
(2) P Q
(3) P Q
(4)
41. 1N, 2N 3N
(1) 3 N (2) N2
3
(3) N2
3(4)
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...01...Class : XI/G6 15
Space for Rough Work
42. The following set represents magnitudes of three vectors.
Which set of vectors can never give a zero vector on
addition–
(1) 3, 4, 5 (2) 2, 1, 3
(3) 12, 10, 23 (4) 13, 5, 12
43. A car is moving in east direction. It takes a right turn and
moves along south direction without change in its speed.
What is the direction of average acceleration of the car–
(1) North east (2) South east
(3) North west (4) South west
44. The magnitudes of two forces 21 F&F��
is 10 N and 8 N.
The angle between them is 120°. The magnitude of their
difference is–
(1) N244 (2) N84
(3) N164 (4) None of these
45. î2BA ����
and ĵ4BA ����
then angle between
BandA��
is–
(1) 127° (2) 143°
(3) 53° (4) 37°
46. The time dependence of a physical quantity p is given by
p p e t� �( )� where � is constant and t is time. The constant �.
(1) is dimensionless (2) has dimensions T–2
(3) has dimensions T2 (4) has dimensions of p
47. If y = 3x2 � 2x + 1, find the value of x for which dx
dy = 0.
(1) 1/3 (2) 1/4
(3) 1/2 (4) None of these
42.
(1) 3, 4, 5 (2) 2, 1, 3
(3) 12, 10, 23 (4) 13, 5, 12
43. 90°
(1) (2)
(3) (4)
44. 1F�
2F�
10 N 8 N
120°
(1) N244 (2) N84
(3) N164 (4)
45. î2BA ����
ĵ4BA ����
A�
B�
(1) 127° (2) 143°
(3) 53° (4) 37°
46. p
p p e t� �( )� � t �.
(1) (2) T–2
(3) T2 (4) p
47. y = 3x2 � 2x + 1, x dx
dy = 0
(1) 1/3 (2) 1/4
(3) 1/2 (4)
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...01...Class : XI/G6 16
Space for Rough Work
48. A man moves in an open field such that after moving 10
m in a straight line, he makes a sharp turn of 60° to his
left. Find the total displacement of the man just after 6
such turns–
(1) 10 m (2) 20 m
(3) 70 m (4) 30 m
49. Two vectors B&A��
have magnitudes 2 & 1
respectively. If the angle between B&A��
is 60°, then
which of the following vectors may be equal to B2
A ��� .
A�
B�
(1) (2)
(3) (4)
50. A person pushes a box kept on a horizontal surface withforce of 100 N. In unit vector notation force F
� can be
expressed as–
45°
y
xF
(1) 100 )ĵî( � (2) 100 )ĵî( �
(3) 250 )ĵî( � (4) 250 )ĵî( �
48.
10m 60°
6
(1) 10 m (2) 20 m
(3) 70 m (4) 30 m
49. A�
B�
A�
B�
60°
B2
A ���
A�
B�
(1) (2)
(3) (4)
50. 100 N
45°
y
xF
(1) 100 )ĵî( � (2) 100 )ĵî( �
(3) 250 )ĵî( � (4) 250 )ĵî( �
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...01...Class : XI/G6 17
Space for Rough Work
51. A photon of 300 nm is absorbed by a gas and then emitstwo photons. One photon has a wavelength 496 nm then
the wavelength of second photon in nm :
(1) 759 (2) 859
(3) 959 (4) 659
52. If the total energy of an electron in hydrogen like atomin an excited state is –3.4 eV, then the
de-Broglie wavelength of the electron is :
(1) 4.3
150Å (2)
8.6150
Å
(3)4.3
150nm (4)
8.6150
nm
53. An electron, a proton and an alpha particle have kinetic
energies of 16E, 4E and E respectively. What is the
quantitative order of their de-Broglie wavelengths?
(1) �e > �
p = �� (2) �p = �� = �e
(3) �p > �
e > �� (4)��e > �� > �p
54. The radii of two of the first four Bohr’s orbits of the
hydrogen atom are in the ratio 1 : 4 The energy
difference between them may be :
(1) Either 12.09 eV or 10.2 eV
(2) Either 2.55 eV or 10.2 eV
(3) Either 13.6 eV or 3.4 eV
(4) Either 3.4 eV or 0.85 eV
51. 300 nm
496 nm
nm
(1) 759 (2) 859
(3) 959 (4) 659
52. –3.4 eV
(1) 4.3
150Å (2)
8.6150
Å
(3)4.3
150nm (4)
8.6150
nm
53. �-
16E, 4E E
(1) �e > �
p = �� (2) �p = �� = �e
(3) �p > �
e > �� (4)��e > �� > �p
54.
1 : 4
(1) 12.09 eV 10.2 eV
(2) 2.55 eV 10.2 eV
(3) 13.6 eV 3.4 eV
(4) 3.4 eV 0.85 eV
CHEMISTRY
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...01...Class : XI/G6 18
Space for Rough Work
55. The potential energy of the electron present in the ground
state of Be3+ ion is represented by:
(1) re
0
2
��� (2) r
e
0���
(3) 20
2
r
e
��� (4) r
e
0
2
���
56. An ion Mna+ has the magnetic moment equal to 4.9 BM.
The value of a is : (atomic no. of Mn = 25)
(1) 3 (2) 4
(3) 2 (4) 5
57. �2zd orbital has :
(1) Two lobes along z-axis and a ring along xy-plane
(2) Two lobes along z-axis and two lobes along xy-plane
(3) Two lobes along z-axis and a ring along yz-plane
(4) Two lobes and a ring along z-axis
58. Photon having wavelength 310 nm is used to break the
bond of A2 molecule having bond energy
288 kJ mol–1 then % of energy of photon converted to
the K.E. is [hc = 12400 evÅ , 1 ev = 96 kJ/mol]
[hc = 12400 evÅ , 1 ev = 96 kJ/mol]
(1) 25 (2) 50
(3) 75 (4) 80
55. Be3+
(1) re
0
2
��� (2) r
e
0���
(3) 20
2
r
e
��� (4) r
e
0
2
���
56. Mna+ 4.9 BM
a : (Mn = 25)
(1) 3 (2) 4
(3) 2 (4) 5
57. �2zd :
(1) z- (lobes) xy-
(ring)
(2) z- (lobes) xy-
(lobes)
(3) z- (lobes) yz-
(ring)
(4) z- (ring) (lobes)
58. 310 nm A2
288 kJ mol–1
% (K.E.)
[hc = 12400 evÅ , 1 ev = 96 kJ/mol]
(1) 25 (2) 50
(3) 75 (4) 80
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Space for Rough Work
59. In Balmer series of lines of hydrogen spectrum, the first
line from the red end corresponds to which one of the
following inter-orbit jumps of the electron for Bohr orbits
in an atom of hydrogen ?
(1) 5 � 2 (2) 4 � 1
(3) 2 � 5 (4) 3 ��2
60. The uncertainty in position and velocity of the particle
are 0.1 nm and 5.27×10–27 ms–1 respectively then the
mass of the particle is : (h = 6.625 × 10–34Js)
(1) 200 g (2) 300 g
(3) 100 g (4) 10000 g
61. The density of air is 0.001293 g/ml at S.T.P. Its vapour
density will be :
(1) 10 (2) 15
(3) 1.44 (4) 14.4
62. If 10 g of Ag reacts with 1 g of sulphur , the amount of
Ag2S formed will be [Atomic weight of Ag = 108,
S = 32] ?
(1) 7.75 g (2) 0.775 g
(3) 11 g (4) 10 g
63. Which of the following statement is correct :
(1) 1 mole of electrons has 1.6 × 10–19 C of charge.
(2) 1 mole of electron weighs 0.54 mg
(3) 1 mole of electrons weighs 5.4 mg
(4) 1 mole of electrons weighs 0.54 kg
59.
(1) 5 � 2 (2) 4 � 1
(3) 2 � 5 (4) 3 ��2
60. 0.1 nm
5.27×10–24 ms–1
(h = 6.625 × 10–34Js)
(1) 200 g (2) 300 g
(3) 100 g (4) 10000 g
61. S.T.P. 0.001293
(1) 10 (2) 15
(3) 1.44 (4) 14.4
62. 10 g Ag, 1 g Ag2S
[Ag = 108 , S = 32] ?
(1) 7.75 g (2) 0.775 g
(3) 11 g (4) 10 g
63.
(1) 1 1.6 × 10–19 C
(2) 1 0.54 mg
(3) 1 5.4 mg
(4) 1 0.54 kg
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64. When a mixture consisting of 10 moles of SO2 and 16
moles of O2 were passed over a catalyst, 8 mole of SO
3
were fomed at equilibrium. The number of moles of SO2
and O2 which did not enter into reaction were
(1) 2 , 12 (2) 12 , 2
(3) 3 , 10 (4) 10 , 3
65. A solution containing 0.1 mol of a metal chloride MClx
requires 500 ml of 0.8 M AgNO3 solution for complete
reaction MClx + xAgNO
3 � xAgCl + M(NO
3)
x. Then
the value of x is
(1) 1 (2) 2
(3) 4 (4) 3
66. The temperature at which molarity of pure water is equal
to its molality is :
(1) 273 K (2) 298 K
(3) 277 K (4) None
67. What is the molarity of H2SO
4 solution that has a density
1.84 gm/cc at 35ºC and contains 98% by weight-
(1) 4.18 M (2) 8.14 M
(3) 18.4 M (4) 18 M
68. 5.85 g of NaCl is dissolved in 1 L of pure water. The
number of ions in 1 mL of this solution is
(1) 6.02 × 1019 (2) 1.2 × 1022
(3) 1.2 × 1020 (4) 6.02 × 1020
64. SO2 10 O
2 16
SO3 8
SO2 O
2
(1) 2 , 12 (2) 12 , 2
(3) 3 , 10 (4) 10 , 3
65.
MClx 0.1 0.8 M AgNO
3 500
ml MClx + xAgNO
3 � xAgCl +
M(NO3)
x , x
(1) 1 (2) 2
(3) 4 (4) 3
66.
(1) 273 K (2) 298 K
(3) 277 K (4)
67. H2SO
4 35ºC
1.84 gm/cc 98%
(1) 4.18 M (2) 8.14 M
(3) 18.4 M (4) 18 M
68. 1 L 5.85 g NaCl 1
mL
(1) 6.02 × 1019 (2) 1.2 × 1022
(3) 1.2 × 1020 (4) 6.02 × 1020
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69. How many gram ions of SO4–2 are present in 1 gram
molecule of K2SO4. Al2(SO4)3. 24H2O :
(1) 2 (2) 3
(3) 1 (4) 4
70. 100 gm impure CaCO3 on heating gives 5.6 lt. CO2 gas
at STP. Find the percentage of calcium in the lime stone
sample.
[At. wt. : Ca = 40 ; C = 12 ; O = 16]
(1) 10 (2) 20
(3) 1 (4) 30
71. 20 mL of H2O2 after acidification with dilute H2SO4
required 30 mL of 12
N KMnO4 for complete oxidation.
The strength of H2O2 solution is : [Molar mass of H2O2
= 34]
(1) 2 g/L (2) 4 g/L
(3) 8 g/L (4) 6 g/L
72. 10 mL of 1 N HCl is mixed with 20 mL of 1 M H2SO
4
and 30 mL 1 M NaOH. The resultant solution has :
(1) 20 meq of H+ ions
(2) 20 meq of OH–
(3) 0 meq of H+ or OH–
(4) 30 milli moles of H+
69. K2SO4. A 2(SO4)3. 24H2O 1
SO4–2
(1) 2 (2) 3
(3) 1 (4) 4
70. 100 CaCO3 5.6 L CO2 STP
CaCO3 Ca
[At. wt. : Ca = 40 ; C = 12 ; O = 16]
(1) 10 (2) 20
(3) 1 (4) 30
71. 20 mL H2O2 H2SO4
30 mL, 12
N KMnO4
H2O2 (H2O2
= 34)
(1) 2 g/L (2) 4 g/L
(3) 8 g/L (4) 6 g/L
72. 1 N HCl 10 mL; 1 M H2SO
4 20 mL 1 M
NaOH 30 mL
(1) H+ 20 meq
(2) OH– 20 meq
(3) H+ OH– 0 meq
(4) H+ 30
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73. Which of the following statements are incorrect :
(1) 0.2 moles of KMnO4 will oxidise one mole of ferrous
ions to ferric ions in acidic medium.
(2)1.5 moles of KMnO4 will oxidise 1 mole of ferrous
oxalate in acidic medium.
(3) 0.6 moles of KMnO4 will oxidise 1 mole of ferrous
oxalate to one mole of ferric ion and carbon dioxide
in acidic medium.
(4) 1 mole of K2Cr
2O
7 will oxidise 2 moles of ferrous
oxalate to ferric ions and carbon dioxide in acidic
medium.
74. Equivalent weight of chlorine molecule in the equation is
3 Cl2 + 6 NaOH ��� 5 NaCl + NaClO
3 + 3 H
2O
(1) 42.6 (2) 35.5
(3) 59.1 (4) 71
75. The valency factor of �2 when, (i) it is formed by the
reaction of potassium iodide and potassium iodate in acid
medium and (ii) when it reacts with hypo, are respectively
:
(1) 2, 2 (2) 35
, 2
(3) 53
, 2 (4) 5, 2
76. The number of moles of ferrous oxalate oxidised by onemole of KMnO
4 in acidic medium is :
(1) 25
(2) 52
(3) 53
(4) 35
73.
(1) KMnO4 0.2
(2) KMnO4 1.5 1
(3) KMnO4 0.6 1
(4) K2Cr
2O
7 1 2
74. :
3 Cl2 + 6 NaOH ��� 5 NaCl + NaClO
3 + 3 H
2O
(1) 42.6 (2) 35.5
(3) 59.1 (4) 71
75. �2 (i)
(ii)
(1) 2, 2 (2) 35
, 2
(3) 53
, 2 (4) 5, 2
76. KMnO4
(1) 25
(2) 52
(3) 53
(4) 35
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77. Consider the redox reaction 2S2O32– + �2 ��� S4O6
2–
+ 2 �– :
(1) S2O32– gets reduced to S4O6
2–
(2) S4O62– gets oxidised to S2O3
2–
(3) �2 gets reduced to �–
(4) �2 gets oxidised to �–
78. The element with atomic number Z = 118 will be :
(1) noble gas
(2) transition metal
(3) alkali metal
(4) alkanline earth metal
79. M3+ has electronic configuration as [Ar] 3d10 4s2, hence
it lies in :
(1) s-block (2) p-block
(3) d-block (4) f-block
80. Which species has the maximum ionic radius:
(1) Na+ (2) O2–
(3) F– (4) Mg2+
81. In which case bond length is shortened ?
(1) When bond multiplicity increses between atoms.
(2) When increase difference in electronegativities of
atoms.
(3) In both cases.
(4) In none of the cases.
77. 2S2O32– + �2
��� S4O62– + 2 �– :
(1) S2O32– , S4O6
2–
(2) S4O62–, S2O3
2–
(3) �2 , �–
(4) �2 , �–
78. Z = 118 :
(1)
(2)
(3)
(4)
79. M3+ [Ar] 3d10 4s2
(1) s- (2) p-
(3) d- (4) f-
80.
(1) Na+ (2) O2–
(3) F– (4) Mg2+
81.
(1)
(2)
(3)
(4)
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Space for Rough Work
82. Ionisation potential of Na would be numerically the same
as :
(1) electron affinity of Na+
(2) electronegativity of Na+
(3) electron affinity of He
(4) ionisation potential of Mg
83. Higher values of ionisation energies of the 5d-transition
elements are consistent with the :
(1) relative smaller effective nuclear charge
(2) relative smaller size of their atoms
(3) relative smaller penetration
(4) all are correct
84. Following are the values of the Electron gain enthalpy
(in kJ mol–1) of the formation of O– and O2– from O :
(1) –142, – 744 (2) –142, 744
(3) 142, 744 (4) –142, – 142
85. Which of the following compunds does not contain–1
formal charge on any of O atom :
(1) O3 (2) H3PO4
(3) HNO3 (4) N2O5
82. Na
(1) Na+
(2) Na+
(3) He
(4) Mg
83. 5d-
(1)
(2)
(3)
(4)
84. O O – O2–
(kJ mol–1 )
(1) –142, – 744 (2) –142, 744
(3) 142, 744 (4) –142, – 142
85. O –1
(formal) :
(1) O3 (2) H3PO4
(3) HNO3 (4) N2O5
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...01...Class : XI/G6 25
Space for Rough Work
86. Which of the following compounds will have the largest
lattice energy ?
(1) Al2O
3(2) CaO
(3) LiBr (4) MgBr2
87. CuI2 is unstable even at ordinary temperature because:
(1) the Cu2+ ion with a comparatively small radius has a
strong polarising power.
(2) the Cu2+ ion with a 17 electron outer shell has weak
polarising power.
(3) the I– ion with a larger radius has a high polarisability.
(4) both (1) and (3)
88. Which of the statements is correct about SO2 ?
(1) two �, two ��and no lone pair of electrons around
central atom
(2) two � and one���around central atom
(3) two �, two � and one lone pair of electron around
centeral atom
(4) none of these
89. The ion which is not tetrahedral in shape is :
(1) BF4– (2) NH
4+
(3) XeO4
(4) ICl4–
90. The ONO angle is maximum in :
(1) HNO3
(2) NO2+
(3) HNO2
(4) NO2
86.
(1) Al2O
3(2) CaO
(3) LiBr (4) MgBr2
87. CuI2
(1) Cu2+
(2) Cu2+, 17
(3) I–
(4) (1) (3)
88. SO2
(1) � ��
(2) � 1 �
(3) �, �
(4)
89.
(1) BF4– (2) NH
4+
(3) XeO4
(4) ICl4–
90. ONO
(1) HNO3
(2) NO2+
(3) HNO2
(4) NO2
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...01...Class : XI/G6 26
Space for Rough Work
91. In XeF2(g)
, XeF4(g)
and XeF6(g)
the number of lone pairs
on Xe respectively are :
(1) 2, 3, 1 (2) 1, 2, 3
(3) 4, 1, 2 (4) 3, 2, 1
92. The structure of F2SeO is analogous to :
(1) SO3
(2) ClO–3
(3) XeO3
(4) (2) and (3) both
93. Which of the following statement is true for O2F
2– ?
(1) The electrons are located at the corners of a trigonal
bipyramidal but one of the equatorial pairs is
unshared.
(2) It has sp3d hybridisation and is T–shaped.
(3) Its structure is analogous to SF4.
(4) (1) and (3) both
94. In which of the following compounds B atoms are in
sp2 and sp3 hybridisation states ?
(1) Borax (2) Diborane
(3) Borazole (4) All
91. XeF2(g)
, XeF4(g)
XeF6(g)
Xe
(1) 2, 3, 1 (2) 1, 2, 3
(3) 4, 1, 2 (4) 3, 2, 1
92. F2SeO
(1) SO3
(2) ClO–3
(3) XeO3
(4) (2) (3)
93. O2F
2–
(1)
(2) sp3d T–
(3) SF4
(4) (1) (3)
94. B sp2 sp3
(1) (2)
(3) (4)
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...01...Class : XI/G6 27
Space for Rough Work
95. Which of the following is a wrong order with respect to
the property mentioned against each :
(1) NO¯ > NO > NO + –bond length
(2) H2 > H
2+ > He
2+ –bond energy
(3) O22– > O
2 > O
22+ – magnetic moment
(4) NO2+ > NO
2 > NO
2¯ –bond angle
96. Which reaction involves a change in the electron–pair
geometry for the under lined element ?
(1) BF3 + F– ��� BF
4–
(2) NH3 + H+ ��� NH
4+
(3) 2 SO2 + O
2 ��� 2 SO
3
(4) H2O + H+ ��� H
3O+
97. Which one (s) of the following structures cannot represent
resonance forms for N2O
(diamagnetic)?
(A) (B)
(C) (D)
(E)
(1) A and C (2) C , E and D
(3) D and E (4) C and D.
95.
(1) NO¯ > NO > NO + –
(2) H2 > H
2+ > He
2+ –
(3) O22– > O
2 > O
22+ –
(4) NO2+ > NO
2 > NO
2¯ –
96.
(1) BF3 + F– ��� BF
4–
(2) NH3 + H+ ��� NH
4+
(3) 2 SO2 + O
2 ��� 2 SO
3
(4) H2O + H+ ��� H
3O+
97. N2O
( )
(A) (B)
(C) (D)
(E)
(1) A C (2) C , E D
(3) D E (4) C D.
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Space for Rough Work
98. Which of the following statements are correct ?
(I) structure is not allowed because octet
around 'O' can not be expanded.
(II) H2O
2 is ionic compound
(III) In B2 molecule, the highest occupied molecular
orbital is � molecular orbital.
(IV) The lp–bp repulsion is stronger than bp–bp repulsion.
(1) (I) and (III) (2) (II) and (III)
(3) (I) and (IV) (4) (III) and (IV)
99. Among the following compounds, the correct order of
the polarity of the bonds is :
SbH3 , AsH
3 , PH
3 , NH
3 .
(1) SbH3 < AsH
3 < PH
3 < NH
3
(2) AsH3 < SbH
3 = PH
3 < NH
3
(3) PH3 < AsH
3 < SbH
3 < NH
3
(4) AsH3 < PH
3 < SbH
3 < NH
3
100. The high oxidising power of fluorine is due to :
(1) High electron affinity
(2) High ionisation energy
(3) Both (1) and (2)
(4) None of these
98.
(I) 'O'
(II) H2O
2
(III) B2 �
(IV) lp–bp bp–bp
(1) (I) (III) (2) (II) (III)
(3) (I) (IV) (4) (III) (IV)
99.
SbH3 , AsH
3 , PH
3 , NH
3
(1) SbH3 < AsH
3 < PH
3 < NH
3
(2) AsH3 < SbH
3 = PH
3 < NH
3
(3) PH3 < AsH
3 < SbH
3 < NH
3
(4) AsH3 < PH
3 < SbH
3 < NH
3
100.
(1)
(2)
(3) (1) (2)
(4)
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