Question

Coke is obtained by heating coal in the?

• A. Presence of air
• B. Absence of air
• C. Presence of catalyst
• D. Restricted supply of air

Answer 1

Answer: (B)

Absence of air

To convert coal into coke, the coal is burned in an oxygen-depleted environment. When this happens, the impurities of the coal are burnt up but the carbon remains. This is why coke is much lighter than coal.