Science & Technology Questions for IAS Perlims - Set 4

Science & Technology Questions for IAS Perlims - Set 4

1. The mass of a body is different from its weight because

a. Mass is a variable quantity whereas weight is constant.

b. Mass varies very little at different places whereas weight varies a lot.

c. Mass is constant but weight decreases as the body moves from the poles to the equator.

d. Weight is measure of the quantity of matter whereas mass is a force.

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2. The science dealing with the study of phenomena at very low temperature is known as

a. Refrigenics
b. Cytogenics
c. Frozenics
d. Cryogenics

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3. Which of the following is Not a primary colour

a. Blue
b. Yellow
c. Red
d. Green

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4. To an astronaut, the outer space appears

a. White
b. Blue
c. Yellow
d. Black

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5. Which of the following statements are Not correct

a. Value of g decreases with height or depth from earth's surface
b. g is maximum at poles
c. g Is minimum at equator
d. g increases due to rotation of earth

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6. Frequency of audible sound is

a. 20 Hz -2000Hz
b. 20 Hz to 20000 Hz
c. 200Hz to 20000Hz
d. Above 20000 Hz

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7. Which of the following is not a mode of transmission of heat

a. Evaporation
b. Conduction
c. Convection
d. Radiation

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8. Ohm is the unit of

a. Voltage
b. Current
c. Resistance
d. Conductance

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9. Optical fibres works on the principle of

a. Total Internal Reflection of light
b. Refraction of light
c. Reflection of light
d. Dispersion of light

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10. Two isotopes have

a. Same number of neutrons
b. Same number of protons
c. Same mass number
d. None of the above

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