Question 1 : ML²T^-2 is the dimensional formula for
1. moment of inertia
2. pressure
3. elasticity
4. couple acting on a body
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Question 2 : Radiocarbon dating technique is used to estimate the age of
1. rocks
2. monuments
3. soil
4. fossils
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Question 3 : Inside an aeroplane, flying at a high altitude,
1. the pressure is the same as that outside
2. normal atmospheric pressure is maintained by the use of air pumps
3. the pressure inside is less than the pressure outside
4. normal humidity and partial vacuum are maintained
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Question 4 : Radio telescopes are better than optical telescopes because
1. they can detect faint galaxies which no optical telescope can
2. they can work even in cloudy conditions
3. they can work during the day and night
4. All of the above
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Question 5 : Superconductors are substances which
1. conduct electricity at low temperature
2. offer high resistance to the flow of current
3. offer no resistance to the flow of electricity
4. conduct electricity at high temperatures
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Question 6 : Intensity of sound has
1. an object existence
2. a subject existence
3. no existence
4. both subjective and objective existence
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Question 7 : Isotopes of an element contain
1. the same number of protons but different number of neutrons
2. the same number of neutrons but different number of protons
3. equal number of protons and electrons
4. equal number of nucleons
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Question 8 : Magnetism at the centre of a bar magnet is
1. minimum
2. maximum
3. zero
4. minimum or maximum
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Question 9 : One nanometer is equal to
1. 10^-6m
2. 10^-8m
3. 10^-9m
4. 10^-5m
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Question 10 : Sound travels at the fastest speed in
1. steel
2. water
3. air
4. vacuum
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