Q. The phenomenon of nuclear fission is opposite to that of

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Q. An ideal coolant for a nuclear reactor should

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Q. The size of an atom is of the order of one

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Q. 'Light water' used as a coolant in nuclear reactor is nothing but

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Q. Isotopes of an element have different

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Q. Positron is a/an

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Q. Uranium is recovered from its ore (pitchblende) by

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Q. Which of the following is the best nuclear fuel?

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Q. Pick out the correct statement.

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Q. Which of the following nuclear reactors is the most efficient thermodynamically while operating between the same temperature and pressure limits of the reactor ?

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Q. Which of the following accounts for the maximum energy release in the nuclear fission process ?

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Q. In a pressurised water reactor (PWR), the

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Q. Liquid metal (e.g, . molten sodium) is preferred as a coolant in case of a/an __________ reactor.

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Q. Coolant used in a boiling water reactor is

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Q. A thermal nuclear reactor compared to a fast breeder reactor

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Q. Isotopes of an element have the same

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Q. Biological shield is provided in a nuclear power reactor to protect the __________ from radiation damage.

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Q. The atomic mass of an element is fractional, because

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Q. A heterogeneous reactor is the one, in which the moderator and the

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Q. Radioactivity of an isotope is expressed in

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