Question

Write one word for the following.

1.	The process of burning a substance in the presence of air or oxygen	....................
2.	A region where combustion of fuel takes place	....................
3.	Substances that produce heat and light energy on burning	....................
4.	A fuel that is generally black or brownish-black in colour	....................
5.	A type of coal with carbon content of around 92−98%	....................

Answer 1

1. Combustion
2. Flame
3. Combustible substances
4. Coal
5. Anthracite