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Controlled chain reaction is seen in...

Controlled chain reaction is seen in ______

A

atom bombs

B

nuclear reactors

C

synchroton

D

detectors

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The correct Answer is:
B
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SURA PUBLICATION-NUCLEAR PHYSICS-ADDITIONAL QUESTIONS & ANSWER (CHOOSE THE CORRECT ANSWER)
  1. R is the safe limit of radiation exposure per week .

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  2. Radioactive materials are kept in thick-walled containers.

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  3. Controlled chain reaction is seen in

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  4. In Uncontrolled chain reactions, the number of fission producing neutr...

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  5. The energy required to remove an electron in a hydrogen atom from n=10...

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  6. Chain reaction is possible only when the loss of neutrons is the neut...

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  7. Minimum size of a system in which at least 1 neutron is available for ...

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  8. Chain reaction is possible , only if the size of system is the critic...

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  9. Natural uranium consists of % of U^(235) and % of U^(238).

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  10. U^(238) is fissionable neutrons.

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  11. is fissionable by neutrons of all energies.

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  12. Atom bomb explosions produce waves.

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  13. The first nuclear reavtor was built at

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  14. In order to supply neutrons for research purpose , we use reactors.

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  15. For production of radio-isotopes , we use reactions.

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  16. A good slows down neutrons by elastic collisions and it does not remo...

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  17. Commonly used moderators are and .

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  18. Graphite is used as a in nuclear reactors.

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  19. are used to control the chain reaction.

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  20. The moderator used in nuclear reacton is .

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