Compound which is prepared from gypsum, has the property of hardening when mixed right quantity of waterc) List any one use of the above compound
c) List any one use of the above compound​

Explanation:

mix right quantity of water

radioactive decay occurs in unstable atomic nuclei – that is, ones that don't have enough binding energy to hold

the nucleus together due to an excess of either protons or neutrons.

it is b that is the answer.