Q. The atomic number of a radioactive element is not changed, when it emits __________ rays.

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Q. Fission of U-235 on slow neutron bombardment can be represented by

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Q. A nuclear reactor can't be used for

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Q. Which of the following is a moderating material used in nuclear reactor ?

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Q. The atomic number of an element is equal to the number of __________ present in its atom.

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Q. The type of pump used for the recirculation of molten sodium coolant in liquid metal cooled reactor is a/an __________ pump.

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Q. Fast breeder Test Reactor (FBTR) is located at

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Q. Tarapur atomic power station

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Q. In a nuclear explosion, the energy is released primarily in the form of __________ energy.

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Q. The largest stable nucleus is

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Q. Spent fuel from the nuclear thermal reactor contains

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Q. A boiling water reactor is the one, in which the

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Q. Which is used as a coolant in nuclear reactor due to its high capture cross-section ?

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Q. Moderating material used in a thermal-reactor should be a

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Q. Ordinary water is not used as a moderator because, it

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Q. The decay product of tritium (a beta emitter) is

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Q. Heat is generated in a nuclear reactor (thermal) by

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Q. The time taken for a radioactive element to reduce to 50% of its original weight is __________ years, if its half life period is 12 years.

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Q. Which of the following may not need a moderator ?

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Q. The amount of a radioisotope remaining undecayed after a time equal to four times its half life, will be __________ percent.

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