Q. “Critical mass” is the minimum mass of nuclear fissile material required for the __________

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Q. Which of the following nuclear materials is fissile?

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Q. Unit of Radioactivity is?

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Q. The ratio of neutrons to protons of an element having a mass number and atomic number of 80 and 40 respectively is?

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Q. Critical energy should be __________ the neutron binding energy of the atom in order to initiate a nuclear fission.

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Q. Which is the main ore of uranium?

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Q. Nucleus of tritium has how many neutrons?

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Q. Percentage of natural uranium present in uranium ore found in Jadugoda (Jharkhand) is?

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Q. Coolant present in the primary circuit of a pressurised water reactor is high pressure __________

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Q. Candu reactor is a __________ nuclear reactor.

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Q. Extraction of uranium from its ore is done using __________ methods.

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Q. Atoms of U-238 and U-235 differ in structure by three __________

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Q. The immediate products of fission are called?

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Q. Each neutron produces _________ neutron(s) per fission.

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Q. 1 Curie = _____________

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Q. The nuclear activity occurring in the radioisotope H3 is?

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Q. The nuclear activity occurring in the radioisotope Carbon 14 is?

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Q. The nuclear activity occurring in the radioisotope Krypton 87 is?

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Q. The nuclear activity occurring in the radioisotope Xenon 135 is?

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Q. The nuclear activity occurring in the radioisotope Strontium 90 is?

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