Question

In the nuclear reactor cadmium rods are used. This is because the cadmium.

• A. Control the chain reaction
• B. Speeds up the neutrons
• C. Emits neutrons
• D. Slows down the neutrons

Answer 1

The correct option is A Control the chain reaction

As cadmium or boron easily absorbs slow moving neutrons. So, they are used in nuclear reactor to control the fission rate. When cadmium rod is pushed into the reactor, the fission rate decreases and when it is pulled out the fission rate increases.