Power Plant Questions and Answers – Nuclear Fission

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

1. What is the function of moderators in nuclear reactor?
a) absorb the secondary neutrons
b) slow down the secondary neutrons
c) control the chain reaction
d) none of the mentioned
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2. Which of the following is not used as a nuclear fuel cladding material?
a) Cadmium
b) Zircalloy
c) Ceramics
d) Stainless Steel
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3. Nuclear fuel complex, Hyderabad is engaged in the job of __________
a) processing of uranium ore
b) manufacture of nuclear fuel elements/assemblies
c) treatment of spent fuel
d) none of the mentioned
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4. Which one is different for the neutral atoms of the isotopes of an element?
a) Number of electrons
b) Atomic weight
c) Atomic number
d) Number of Protons
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5. Thorium can be converted into U-233 in a __________ reactor.
a) fast breeder
b) liquid metal reactor
c) curtis reactor
d) none of the mentioned
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6. A moderator ______ the neutrons.
a) accelerates
b) slows down
c) blocks
d) stops
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7. __________ nuclear reactor does not require a heat exchanger to supply steam to power turbine.
a) pressurised water
b) boiling water
c) helium cooled
d) molten sodium cooled
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8. If 4 gm of a radioisotope has a half-life period of 10 days, the half-life of 2 gm of the same istotope will be __________ days.
a) 10
b) 5
c) 20
d) 30
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9. Thermal neutrons which are used to cause the fission of U-235 have energy __________ eV.
a) >1
b) <0.025
c) >200
d) 1-25
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10. Pick out the wrong statement.
a) Positron is heavier than a proton
b) A, β-ray particle is identical with an electron
c) The nucleus of a hydrogen atom is identical with a proton
d) Mass of an electron is about 1/1800th of the lightest nucleus
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11. Specific gravity of uranium and plutonium is about __________
a) 13
b) 9
c) 19
d) 27
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12. Which of the following types of nuclear reactors is most prone to radioactive hazards?
a) Gas cooled reactor
b) Molten Sodium Reactor
c) Boiling water reactor
d) Pressurised water reactor
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13. The velocity of thermal (slow) neutrons triggering nuclear fission reaction (having energy equal to 0.025 eV) is about __________ metres/second.
a) 1100
b) 2200
c) 3300
d) 4400
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14. Radioactive decay is a ________ change.
a) Physical
b) Chemical
c) Nuclear
d) None of the mentioned
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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.

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