Q. A fertile material is the one, that can be __________

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Q. The half-life period of a radioactive element depends on its __________

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Q. Which is radioactive in nature?

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Q. Which is the most commonly used nuclear fuel in boiling water reactor?

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Q. Enrichment of uranium is done to increase the concentration of __________ in the natural uranium.

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Q. Fuel for a nuclear reactor (thermal) is _____________

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

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Q. __________ have the same mass number, but different nuclear charge.

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Q. Atoms with same number of neutrons, but different number of nucleons are called __________

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Q. The half-life period of a radioactive substance is best determined by counting the number of alpha particles emitted per second in a Geiger Muller counter from its known quantity. If the half-life period of a radioactive substance is one month, then?

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Q. Which of the following ores contains maximum percentage of uranium?

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Q. Percentage of U-238 in natural uranium is around __________

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Q. Uranium ore is currently mined & concentrated at __________

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Q. Graphite is used in nuclear reactor as __________

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Q. A fast breeder reactor employs __________

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Q. U-235 content in enriched uranium, that is normally used in power reactors (e.g., at Tarapur atomic power plant), is about __________ percent.

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

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Q. Which of the following is a non-fissile material?

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

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Q. Which is the main ore of thorium?

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