1.
An element common to all acids
is
(A)
Oxygen
(B)
Hydrogen
(C)
Sulphur
(D)
Chlorine
2.
Which of the following
statements relating to sound and light is true?
(A)
Light is as form of kinetic
energy whereas sound is a form of
potential energy
(B)
Light can be reflected but sound cannot be
(C)
Light travels faster In air
than sound does
(D)
Sound travels in waves but
light does not.
3.
Radioactive substances can be
produced readily in
(A)
An electron gun
(B)
An atomic pile
(C)
A transistor
(D)
A Wilson cloud chamber
4.
The method of estimating the
age of the crust of the earth, which is now believed to be the most accurate,
makes use of the rate of
(A)
Accumulation of Sedimentary
beds
(B)
Accumulation of salt in the
ocean
(C)
Atomic disintegration (radio- activity)
(D)
Loss of heat by the earth
5.
When a given amount of air is
cooled
(A)
The amount of moisture it can
hold decreases
(B)
Its absolute humidity decreases
(C)
Its relative humidity remains
constant
(D)
Its absolute humidity increases
6.
With the present – day
advancement in medical techniques transplants are possible in all of the following except
(A)
Artery
(B)
Bone
(C)
Cornea
(D)
Kidney
7.
A transistor is most
likely to be found in a
(A)
Fuse
(B)
Fluorescent lamp
(C)
Hearing aid
(D)
Wrist watch
8.
A person born with the inner
ear missing
(A)
Would not have the Eustachian tube
(B)
Would be able to hear sound
(C)
Would be able to hear only with
an electronic hearing aid
(D)
Could only hear a loud
explosion
9.
The possibility of hereditary variation is
greatest when
(A)
Self- fertilization occurs,
as in some
plants
(B)
An abundant amount of food is
provided for the egg
(C)
Organisms reproduce sexually
(D)
Organisms reproduce asexually
10.
Steel is more elastic than
rubber because
(A)
Its density is high
(B)
It is a metal
(C)
Ratio of stress to strain is
more
(D)
Ratio of stress to strain is
less
11.
Free surfaced of a liquid behaves like a sheet and tends to contract to the smallest
possible area due to the
(A)
Force of adhesion
(B)
Force of friction
(C)
Centrifugal force
(D)
Force of cohesion
12.
If speed of rotation of the
earth increases, weight of the body
(A)
Increases
(B)
Remains unchanged
(C)
Decreases
(D)
May decrease or increase
13.
The buoyancy depends on
(A)
The shape of the body
(B)
The mass of the body
(C)
The mass of the liquid
displaced
(D)
The depth to which the body
is immersed
14.
The working of a rocket is
based on the principal of
(A)
Electricity
(B)
Kepler’s Law
(C)
Newton’s Law
(D)
Conservation of momentum
15.
Friction can be reduced by
changing over from
(A)
Sliding to rolling
(B)
Rolling to sliding
(C)
Potential energy to kinetic
energy
(D)
Dynamic to static
ANSWERS:
31.
D
32.
D
33.
B
34.
A
35.
A
36.
D
37.
A
38.
B
39.
A
40.
C
41.
A
42.
C
43.
D
44.
A
45.
B