Which of the following are correct with respect to a nuclear reactor?

Moderators are used to decrease the speed of neutrons.

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Water is used as a coolant in the fission process.

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Rods of boron are used to increase the number of neutrons.

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Graphite is used as moderator for reducing the speed of neutrons.

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Solution

The correct options are
A Moderators are used to decrease the speed of neutrons.
B Water is used as a coolant in the fission process.
D Graphite is used as moderator for reducing the speed of neutrons.
$∙$ In a nuclear reactor, fission reaction occurs, which is probable to explosion. To control this, moderators and controllers are used.

$∙$ Graphite is used as a moderator to reduce the speed of neutrons.

$∙$ Rods of boron are used as controllers to decrease the number of neutrons.

$∙$ Water is used as a coolant to absorb the excess heat produced during the fission reaction.

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Similar questions

Q80. With reference to fast breeder reactors, consider the following statements:

1. They use fast neutrons for sustaining the chain reaction.

2. Heavy water is used as moderator in these reactors.

3. They breed more fissile material than they consume.

Which of the above statement(s) is/are correct?

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