Which of the following is used in the production of steel?
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → Coke
Coke is an almost pure form of carbon made by heating coal without air. It is used as a fuel and as the reducing agent in the manufacture of steel and in the extraction of many metals.
Why the other options are incorrect
Option (2) Coal gas — Incorrect. A gas obtained while making coke; it is used mainly as a fuel in industries.
Option (3) Coal tar — Incorrect. A thick black liquid used to make dyes, drugs, paints, explosives and naphthalene balls.
Option (4) All of the above — Incorrect. Coal tar has no role in making steel.