Science & Technology Questions for IAS Prelims - Set 5

Science & Technology Questions for IAS Prelims - Set 5

1. Hydrogen Bomb is based on the principle of

a. Controlled fusion reaction
b. Uncontrolled fusion reaction
c. Controlled fusion reaction
d. Uncontrolled fusion reaction

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2. The working principle of washing machine is

a. Centrifugation
b. Dialysis
c. Reverse osmosis
d. Diffusion

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3. Which of the following statement(s) is\are correct:

i. A geosynchronous satellite is a satellite in geosynchronous orbit, with an orbital period the same as the Earth's rotation period.

ii. Geostationary satellite is a special case of geosynchronous satellite.

a. i
b. ii
c. Both i & ii
d. None

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4. SI unit of temperature is?

a. Kelvin
b. Celsius
c. Fahrenheit
d. Calorie

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5. What is the function of moderator in a nuclear reactor?

a. To control the energy released in the reactor
b. To absorb neutron and stop the chain reaction
c. To cool the reactor
d. To slow down the neutron and turn them into thermal neutron

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6. Neutron was discovered by

a. Rutherford
b. James Chadwick
c. J J Thomson
d. None of the above

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7. Rainbow is formed due to

a. Total internal reflection and dispersion
b. Refraction & Dispersion
c. Refraction & Scattering
d. Total internal reflection and scattering

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8. The technique used to transmit audio signal in television broadcasts is?

a. Amplitude Modulation
b. Frequency Modulation
c. Pulse Code Modulation
d. Time Division Multiplexing

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9. The saturated vapour pressure of water at 100 degree Celsius

a. 76 mm of Hg
b. 75 mm of Hg
c. 760 mm of Hg
d. 750 mm of Hg

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10. Melting point of ice

a. Decrease with increasing pressure
b. Increase with increasing pressure
c. Remains same irrespective of pressure
d. None of the above

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