1.Both a Celsius
and a Fahrenheit thermometer give the same reading at a particular temperature.
What is that temperature ?
a) -273 deg.C b) -180 deg.C c) -40 deg.C d) 0 deg.C
2.A large ship
can float but a steel needle sinks because of
a) Viscosity b) Surface tension c) Density d) None of these
3.A piece of
rock was brought from the moon to earth, Then
a) Its mass
alone changed b)
Its weight alone changed
c) Both mass as
well as weight changed d)
Neither its mass nor its weight changed
4.A sprayer
works on the principle expounded by,
a) Newton b) Archimedes c) Boyle d)
Pascal
5.An electric
bulb produces a loud sound when broken because
a) the air rushes
into the partial vacuum in the bulb
b) the gas
inside it explodes c)
the glass in brittle
d) the gas
inside it suddenly expands
6.Fish plates
are used in railway tracks
a) to avoid
tracks being distorted due to temperature fluctuation
b) to connect
the train
c) to connect
two rails
d) to keep the
rails equidistance
7.Why is the dam
of water reservoir thick at the bottom ?
a) quantity of
water increases with depth
b) density of
water increases with depth
c) pressure of
water increases with depth
d) temperature
of water increases with depth
8.Who said “A
body with remain at rest, unless an external force acts on the body” ?
a) Newton b) Einstein c) Archimedes d) Galileo
9.If a apple is
released from an orbiting spaceship, it will
a) fall towards
the earth
b) more along
with the spaceship at the same speed
c) move at a
higher speed d)
move at a lower speed
10.Tea will cool
most easily in a
a) metal cup b) porcelain cup c) glass cup d)
clay cup
11. The ink of a
pen leaks out in an airplane because
a) atmospheric
pressure increases
b) pressure of
ink inside is more than the ambient pressure
c) high speed of
the airplane
d) temperature
difference
12. The zero of
kelvin scale is
a) 0 deg.C b) -100 deg.C c) -273 deg.C d) -200 deg.C
13.Water has
maximum density at
a) room
temperature b) 100 deg.C c) 0 deg.C d) 4 deg.C
14.When a ship
enters a sea from a river
a) it rises a
little b)
it sinks little
c) it remains at
the same level d) it
rises or sinks depending on the material it is made of
15.When ice
melts, in a beaker of water, the level of water in the beaker will
a) increases b) decreases c) remain at same d) can’t say
16.A sudden fall
in a barometer reading indicates
a) clear weather b) hail storm c) storm d) heavy rainfall
17.The swing of
a spinning cricket ball in air can be explained
a) sudden change
in wind direction b)
buoyancy of air
c) turbulence
caused by wind d)
bernoulli’s theorem
18. Which one of
the following metals is the best conductor of electricity ?
a) copper b) aluminium c) silver d) iron
19.Universal law
of gravitation was propounded by
a) Kepler b) Galileo c) Newton d) Copernicus
20.The weight of
a body is
a) the same
everywhere on the surface of the earth b)
maximum at the poles
c) maximum at the equator d)
more on the hills than the plains
21.A person
weighs more in a lift, where is
a) moving up
with a constant velocity b)
moving down with a constant velocity
c) accelerating
upward d)
accelerating downward
22.A ball tied
with a string to a rotating shaft revolves at uniform speed. As the shaft is
suddenly brought to rest the string starts getting round the shaft with the
angular velocity of the ball
a) increasing b) decreasing c) remaining constant d) zero
23.It is easier
to roll a barrel than to pull it because
a) the full
weight of the barrel comes into play when it is pulled
b) rolling
friction is much less than sliding friction
c) the surface
area of the barrel in contact with the road is more in the case of pulling
d) of a reason
other than those mentioned
24.When the
velocity of a body is doubled, its
a) acceleration
is doubled b)
momentum is doubled
c) kinetic
energy is doubled d)
potential energy is doubled
25.If a two
bodies, one heavy and one light, are acted upon by the same force for the same
time, then the both bodies acquired the
a) same velocity b) same momentum c) same acceleration d) none of these
26.The work done
in holding a weight of 20 Kg at a height of 1 m above the ground is,
a) zero b) 20 J c) 200 J d) none of
these
27.When the
speed of a body is doubled, it’s kinetic energy becomes
a) double b) half c) quadruple d) one fourth
28.An object
weighs maximum in
a) air b) water c) hydrogen d) vacuum
29.Which one of
the following would a hydrogen balloon find easiest to lift ?
a) 1 kg of water b)
1 kg of copper
c) 1 kg of
loosely packed feathers d)
all the same
30.In a cold
countries alcohol is preferred to mercury as a thermometric liquid, because
a) alcohol is a
better conductor of heat
b) alcohol can
be coloured and its level seen easily
c) alcohol has a
very low freezing point d)
alcohol is cheaper than mercury
31.On heating a
circular metallic disc with a circular hole at a centre, the diameter of the
hole will,
a) decrease b)
remain the same
c) increase d)first
increase then decrease
32.Using the
codes GH for good conductor of heat, BH for bad conductor of heat, GE for good
conductor of electricity, and BE for bad conductor of electricity, mica can be
classified as
a) GH & GE b) GH & BE c) BH & GE d) BH & BE
33.Hot coffee is
poured simultaneously in four metallic tumblers painted outside with different
types of paints. After some time, the coffee will be found coldest in the
tumbler painted,
a) rough white b) shining white c) rough black d) shining black
34.During
summer, we feel comfortable under a fan because it,
a) throws cool
air on us
b) sets the air
in motion, thereby increasing the evaporation of sweat
c) produces
convection current
d) produces air
which carries heat away from the body
35.Scalding with
steam is more severe than scalding by boiling water, because
a) steam can
penetrate the skin b)
steam is at high temperature
c) steam
contains more energy than boiling water d)
steam is at higher pressure
36.One feel cold
after a dip in sea water due to,
a) convection
currents b)
the deposition of salt on the body
c) the
evaporation of water on the body d)
the difference in temp. b/w land and sea
37.The surface
of water in a pond remains cool even an a hot day because
a) water
evaporates at the surface and evaporation causes cooling
b) the heat
absorbed at the surface is transmitted downwardly
c) water in a
contact with bottom of the pond before cool and rises to a surface due to
convection
d) none of these
38.The boiling
point of water
a) always 100
deg.C b)
depends on atmospheric pressure
c) depends on
material of the container d)
depends on relative humidity
39.Food is
cooked faster in a pressure cooker because
a) heat cannot
escape from the cooker
b) steam is
hotter than the boiling water
c) due to high
pressure the boiling point of water is raised
d) in the cooker
water starts boiling at a lower temperature
40.The cover of
a solar cooker is made of glass,
a) because glass
allows sunlight into the container does not allow heat radiation out of it
b) because glass
in transparent and one can see the food cooking
c) because glass
does not absorb heat radiation and therefore, here is no energy wastages
d) because glass
is a good conductor of heat and also cheap
41.Why does
radio reception improve slightly during the night ?
a) the outside
noise is reduced very much at night
b) unlike the
daytime, only a few radio stations broadcast during the day
c) sunlight
affects radio broadcasts to some extent during the day
d) the magnetic
field of the earth acts which reduced intensity during the night, thereby
reducing its impact on broadcast
42.To an
astronaut, the outer surface appears,
a) white b) black c) deep blue d) crimson
43.The speed of
sound will be highest in
a) dry air at 0
deg.C b)
dry air at 30 deg.C
c) humid air at
0 deg.C d)
humid air at 30 deg.C
44.Broad wooden
sleepers are placed below the rails to,
a) act as shock
absorber b)
fix the fish plates properly
c) hold the
rails properly d)
reduce pressure exerted by the trains
45.What is the
principle by which a cooling system (Radiator) in a motor car works ?
a) conduction
only b)
convection only
c) radiation
only d)
both conduction and convection
46.How much is
one barrel of oil approximately equal to
a) 131 litres b) 159 litres c) 257 litres d) 321 litres
47. I. A jet
engine uses the surrounding air for its oxygen supply and so is unsuitable for
motion in space
II. A rocket carries its own supply of
oxygen in the gas form and fuel
Which of the
statements given above is/are correct ?
- 1 only b) 2 only c) both 1 and 2 d) neither 1 nor 2
48.Which one of
the following does not contain silver ?
a) horn silver b) german silver c) ruby silver d) lunar silver
49.which are the
materials generally employed as solder in soldering operation in electronics ?
a) iron and tin b) lead and tin c) aluminium and lead d) aluminium and iron
50.When water is
heated from 0 deg.C to 10 deg.C, its,
a) volume
increases b)
volume decreases
c) volume does
not change d)
volume first increases and decreases
51.The memory of
a computer is commonly expressed in terms of
kilobytes. A byte is made up of,
a) 8 binary
digits b) 8 decimal digits c) 2 binary digits d) 2 decimal digits
52.If the
earth’s direction of rotation is
reversed, what would be the IST, when it is noon at the international date line
?
a) 06:30 hrs b) 05:30 hrs c) 18:30 hrs d) 17:30 hrs
53.The working
principle of a washing machine is________________________________
a) centrifugation b) dialysis c) reverse osmosis d) diffusion
54.The tendency
of a liquid drop to contract and occupy minimum area is due to,
a) surface
tension b) viscosity c) density d) vapour pressure
55.The clouds
float in the atmosphere because of their low
a) temperature b) velocity c) pressure d) density
56.The only
snake that build a nest is,
a) chain viper b) king cobra c) saw-scaled viper d) snake can’t build the nest
57.In an
electronic watch, the component corresponding to pendulum of a pendulum clock
is,
a) transistor b) crystal oscillator c) diode d) balance wheel
58.The working
of the quartz crystal in the watch is based on the
a) photoelectric
effect b)
Johnson effect
c)
piezo-electric effect d)
Edison effect
59.If a body is
allowed fall from the window of a moving train, the body will fall on the
ground after following a ___________________ path.
a) straight line b) parabolic c) circular d) any of these
60.Soap makes
the water easier to wash clothes because, its
a) removing its
hardness b)
increasing density
c) decrease its
surface tension d)
increase its surface tension
61.In a
barometer, if water is used in place mercury, then the length of the barometer
tube has to be
a) increased b) decreased c) kept same d) unchanging
62.What kind of
energy works when a watch spring is wound up ?
a) kinetic
energy b) electrical energy c) potential energy d) none of these
63.The earth
receives heat from the sun through
a) radiation b) conduction c) convection d) all of these
64.If an
astronaut inflates a hydrogen balloon, and release is at a height of 10 meters,
standing on the moon, the balloon will be,
a) initially
rise but fall of soon b)
fall down
c) remain at its
place d)
rise up
65.Which
phenomenon can be demonstrated by ice-skating ?
a) under
pressure melting point of ice remains constant
b) the
co-efficient of friction with metal recedes
c) the melting
point of ice is lowered under pressure
d) the melting
point of ice rises under pressure
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OF SET – 1-------------------------------
