Question

Coal produces energy on burning, but we can not get energy by eating it while eating an apple gives us energy. Exp lain why it is so.

Answer 1

Coal is a fossil fuel and is burnt to produce heat. Its a form of carbon it is not edible! It does not have fat, sodium and cholesterol that an apple has which is important for our survival. So don't munch a piece of charcoal accidentally! Just kidding :)