Suppose you were asked to boil a given quantity of water using cow dung cake, coal and LPG as fuel. Which fuel would you prefer? Give your reason.
You may take the help of your parents. Do these three fuels produce the same amount of heat?

Explanation

I would prefer LPG because it
(i) burns easily
(ii) produces more heat in comparison to cow dung cake and coal and
(iii) is a clean fuel, i.e., does not produce smoke and ash.