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In a nuclear reactor....

In a nuclear reactor.

A

the thick concrete shield is used to slow down the speed of neutrons

B

heavy water or graphite is used to moderate the activity of the reactor

C

the chain reaction is controlled by rods of uranium whose going in reduces the rate

D

out of `U^238` and `U^235` , the natural uranium has less than 1% of `dU^235`

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The correct Answer is:
D
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(a) What is a nuclear reactor ? What is the fuel used in a nuclear reactor ? (b) With the help of a labelled diagram, describe the working of a nuclear power plant. (c ) How is the working nuclear reactor of a power plant shut down in an emergency ? (d) Name five places in India where nuclear power plants are located.

Briefly describe the working of a nuclear reactor

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