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Which statement describes the use of control rods?
Control rods are lowered into the reactor to slow down the reaction by absorbing neutrons.
Control rods are lowered into the reactor to speed up the reaction by releasing neutrons.
Control rods are raised out of the reactor to slow down the reaction by absorbing neutrons.
Control rods are raised out of the reactor to speed up the reaction by releasing neutrons.

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MissPhiladelphia
Control rods are rods, plates, or tubes containing a neutron absorbing material (material with high absorbtion cross-section for thermal neutron) such as boron, hafnium, cadmium, etc., used to control the power of a nuclear reactor.
so the statement that describe a control rod is:
Control rods are lowered into the reactor to slow down the reaction by absorbing neutrons.
adefioyelaoye

Control rods are lowered into the reactor to slow down the reaction by absorbing neutrons.

What are Control rods?

These are used to control the rate of fission of the nuclear fuel in a nuclear reactor process.

This is usually done by absorbing the neutrons thereby leading to the reactor slowing down.

Read more about Control rods here https://brainly.com/question/3711995

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