Question

Heating of coal in absence of air is called

• A. Carbonization
• B. Calcination
• C. Refining
• D. Clinkerization

Hint:

Carbonization of coal produces coke by heating coal in absence of air.

Answer 1

The Correct Option is A

Concept: Carbonization is the process of heating coal in the absence of air to obtain coke and other by-products.

Step 1: If coal is heated in presence of air, it burns.

Step 2: If coal is heated in absence of air, volatile matter is removed.

Step 3: The solid carbon-rich product formed is coke.

Step 4: This process is called carbonization. Therefore, heating of coal in absence of air is: \[ \boxed{\text{Carbonization}} \]