E-PolyLearning

1. Hydrogen bomb employs the nuclear fusion of
a. hydrogen
b. deuterium
c. tritium
d. helium
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Answer: (b).deuterium

2. Sodium melts (at atmospheric pressure) at a temperature of __________ °C.
a. 58
b. 98
c. 348
d. 588
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Answer: (b).98

3. The ratio of volume of an atom to that of its nucleus is
a. 10¹²
b. 10⁻¹²
c. 10⁻⁸
d. 10⁸
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Answer: (a).10¹²

4. Research reactors are normally meant for
a. producing high neutron flux 10¹²-10¹³ neutrons/cm², sec and studying the effect of neutron bombardment on different materials.
b. accelerating the neutrons.
c. power generation.
d. none of these
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Answer: (a).producing high neutron flux 10¹²-10¹³ neutrons/cm², sec and studying the effect of neutron bombardment on different materials.

5. Out of the followingplaces, a nuclear power plant is not located at
a. Talcher (Orissa)
b. Kaiga (Karnataka)
c. Rawatbhata (Rajsthan)
d. Kalpakkam (Tamilnadu)
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Answer: (a).Talcher (Orissa)

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