Question

The use of wood and cow dung cakes as fuel is not considered to be good . give reason

Answer 1

as they emit poisonous gases like carbon-mono-oxide and methane on burning.

Answer 2

The use of wood and cow dung cakes as fuel is not considered to be good. Give reason.

1. Burning of wood / dry dung-cakes causes pollution of the air.
2. Dry wood / dung-cakes after burning leaves a large quantity of ash.
3. Burning of wood / dung-cakes destroy useful plant nutrients.
4. Dry wood / dung-cakes has a lower calorific value.