Coal gas is obtained during the processing of coal to get a

Coal gas is obtained during the processing of coal to get coke. Here are the steps involved in this process:

1. Carbonization: The process begins with the carbonization of coal. This involves heating coal in the absence of air, which results in the production of coke and coal gas.

2. Collection of Coal Gas: The coal gas produced during carbonization is collected. It is a mixture of gases like methane, hydrogen, and carbon monoxide.

3. Purification: The collected coal gas is then purified. It is cleaned to remove tar, ammonia and other impurities.

4. Storage: The purified coal gas is then stored and can be used as a fuel in different industries.

So, coal gas is a by-product obtained during the processing of coal to get coke.