Q. Pick out the wrong statement.

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Q. Water is a better coolant than a gas (like CO₂, He, N₂ etc.), because it

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Q. Net efficiency of ordinary light water cooled nuclear reactor is about __________ percent.

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Q. The sum of masses of two nuclei produced in nuclear fission compared to the mass of original nucleus is

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Q. Extraction of uranium from its ore is done by __________ method.

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Q. 75% of a radioactive element decays in 6 hours. Its half life period is __________ hours.

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Q. Nuclear power plant is not located at

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Q. Heavy water is used as a moderator in a

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Q. Which of the following is a fuel for a fusion reactor (thermonuclear reactor) ?

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Q. Which of the following isotopes is not present in natural uranium ?

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Q. Which of the following is present in Bhabha Atomic Research Centre (BARC) complex, Trombay (Bombay) ?

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Q. Quantity of fissionable material (i.e. U-235) in natural uranium is __________ percent.

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Q. Pick out the correct statement.

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Q. __________ gas is normally not used as a coolant in a nuclear reactor, because of its high neutron capture cross-section.

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Q. The emission of an a-particle causes the resultant nucleus to have

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Q. Solar energy results from __________ reaction.

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Q. In nuclear reactions, __________ number is conserved.

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Q. The molecular weight of heavy water is

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Q. Which of the following is not a good moderating material ?

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Q. Nuclear power generation capacity in India is

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