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Question

Which elements are used in Atomic Reactors to control the speed of neturons?

A
Boron and Cadmium
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B
Cadmium and Aluminium
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C
Boron and Iron
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D
Sodium and Potassium
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Solution

The correct option is C Boron and Cadmium
Control rods are used in nuclear reactors to control the fission rate of uranium or plutonium.

Their compositions include chemical elements such as boron, cadmium, silver, or indium, that are capable of absorbing many neutrons without themselves fissioning.

Hence, option A is correct.

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