You have wood, coal, kerosene and LPG. Which one source of energy would you use for cooking your food and why? Give the reason.
LPG is a better fuel than coal. How?
I will prefer LPG instead of wood and kerosene for cooking food because
(i) it has high calorific value.
(iii) it is easy to use.
(iii) no residue is formed after its burning.
(iv) no existence of pollution.