Power Plant Questions and Answers – Chemical & Nuclear Reactions – I

This set of Power Plant Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Chemical & Nuclear Reactions – I”.

1. Heat is generated in a nuclear reactor (thermal) by
a) fusion of atoms of uranium
b) absorption of neutrons in uranium atoms
c) combustion of nuclear fuel
d) fission of U-235 by neutrons
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2. Thorium-232 is converted into uranium-233 in a/an __________ nuclear reactor
a) heavy water moderated
b) fast breeder
c) thermal
d) enriched uranium
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3. An electron has a mass that is approximately __________ that of the proton.
a) 1/1836
b) 1
c) 1836
d) none of the mentioned
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4. Which of the following may not need a control rod?
a) Candu Reactor
b) Liquid metal cooled reactor
c) Fast breeder reactor
d) None of the mentioned
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5. The amount of a radioactive material (having a half-life of 100 years) remaining after 400 years will be __________ of its original weight.
a) 0.5
b) 0.25
c) 1/8
d) 1/16
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6. The amount of a radioisotope remaining un-decayed after a time equal to four times its half-life will be __________ percent.
a) 3.125
b) 6.25
c) 12.50
d) 25
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7. The time taken for a radioactive element to reduce to 50% of its original weight is __________ years, if its half-life period is 12 years
a) 24
b) 6
c) 18
d) 48
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8. Gas cooling as compared to water cooling of nuclear reactors
a) cannot attain a high temperature
b) is more efficient as gas has a higher specific heat.
c) can produce only saturated steam for feeding to power turbine
d) none of the mentioned
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9. The decay product of tritium is?
a) Hydrogen
b) Deuterium
c) Lithium
d) Helium
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Sanfoundry Global Education & Learning Series – Power Plant Engineering.

To practice all areas of Power Plant Engineering, here is complete set of 1000+ Multiple Choice Questions and Answers.