Q. The amount of a radioactive material (having a half life of 100 years) remaining after 400 years will be __________ of its original weight.

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Q. The second underground nuclear test was conducted by India at

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Q. Which of the following is artificially produced as it does not occur in nature ?

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Q. Gas cooling as compared to water cooling of nuclear reactors

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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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