Question

a) State whether true or false. i) The energy stored in coal is mostly sun’s energy. ii) Coal on burning in excess of oxygen gives out carbon monoxide. b) Define carbonization.

Answer 1

Answer:

1 false

2false

bCarbonization is the conversion of organic matters like plants and dead animal remains into carbon through destructive distillation.

Answer 2

Answers of given statements are as follows -

a) i) False

The energy stored in coal is chemical energy.

ii) False

Coal in presence of excess oxygen undergoes complete combustion. Thus, the product is carbon dioxide.

b) Carbonisation refers to conversion of organic matters into carbon or containing compound. This is done through pyrolysis or destructive distillation. Materials usually taken for carbonisation are wood, agricultural residues etc.