Question

Suppose you were asked to boil a given quantity of water using cow dung coal and LPG fuel which would you prefer why?

Answer 1

use LPG because the time consumed would be less than other fuels
it will cause very less air pollution and won't produce any harmful gases.
while burning coal and cowdung,carbon monoxide gas (CO) gas is produced ,which is poisonous and can cause several problems to human being.