Q. The half life period of a radiactive element is 100 days. After 400 days, one gm of the element will be reduced to __________ gm.

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Q. Nucleus of tritium has __________ neutrons.

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

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Q. A fast breeder reactor

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Q. Which of the following nuclear materials is fissile ?

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

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Q. The main ore of uranium is

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Q. Function of control rod in a nuclear reactor is to control

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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. Secondary cooling circuit is a must in molten sodium cooled fast breeder reactor for

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Q. The main purpose of control rod in a nuclear reactor is to control the

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Q. Nuclear power reactor located at Tarapur is of __________ type.

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Q. Which of the following is not an ore of uranium ?

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Q. Which one is different for the neutral atoms of the isotopes of an element ?

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

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Q. Main source of __________ is monazite sand.

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Q. A radioactive isotope undergoes decay with respect to time following __________ law.

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

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Q. Heavy water (D₂O) in a nuclear reactor serves as a

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Q. Fast breeder reactors are most usable in India, because of our largest __________ deposits.

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