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Dear candidates you will find MCQ questions of Nuclear Power Engineering here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.

Q. 1) Heavy water (D2O) in a nuclear reactor serves as a

(A) Coolant
(B) Moderator
(C) Both A & B
(D) Neutron absorber
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Q. 2) Moderating material used in a thermal-reactor should be a

(A) Good absorber of neutrons
(B) Solid substance
(C) Poor absorber of neutrons
(D) None of these
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Q. 3) The 92U238 emits an a-particle. The product is

(A) 90U234
(B) 90U238
(C) 90U236
(D) 92U236
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Q. 4) Nuclear fuel generally used in reactors is uranium oxide instead of uranium, because the former has higher

(A) Melting point, hence can be subjected to higher temperature
(B) Density ; hence core volume for a given power output would be smaller
(C) Resistance to effects of irradiation
(D) All of the above
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Q. 5) __________ have the same mass number, but different nuclear charge.

(A) Isotopes
(B) Isobars
(C) Isotones
(D) None of these
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Q. 6) Water is a better coolant than a gas (like CO2, He, N2 etc.), because it 

(A) Is a better neutron moderator as well
(B) Requires comparatively smaller pumps and heat exchanger for a given heat transfer rate
(C) Has a better heat transfer characteristics and it can be pressurised to attain a high temperature
(D) All of the above
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Q. 7) Which is the most commonly used molten metal for cooling of nuclear reactors?

(A) Calcium
(B) Sodium
(C) Mercury
(D) Zinc
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Q. 8) Radioactive decay is a __________ change.

(A) Chemical
(B) Nuclear
(C) Physical
(D) None of these
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Q. 9) Heavy water used in the nuclear reactors to slow down the speed of neutrons is

(A) Highly purified water
(B) A compound of oxygen and deuterium
(C) Water having dissolved salts of heavy metals
(D) None of these
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Q. 10) Which of the following gases has very high neutron capture cross-section, making it unsuitable as a coolant in nuclear reactor?

(A) N2
(B) He
(C) CO2
(D) H2
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