Question

Coal is processed in industries to get some useful products. Which of the following is not obtained from coal?

• A. Coke
• B. Coal tar
• C. Coal gas
• D. CNG

Answer 1

The correct option is D

CNG

The explanation for the correct option:

(d) CNG (Compressed Natural Gas)-

• CNG is not obtained from coal.
• CNG is a fuel that can be used to replace diesel, petrol, and LPG (liquefied petroleum gas).
• The burning of CNG creates less toxic gases than the previously mentioned fuels.
• Methane$\left({\mathrm{CH}}_4\right)$ is the main component of CNG.

The explanation for the incorrect options:

(a) Coke

• Coal when processed in the industry gives coke, coal tar, and coal gas.
• Coke is used in the manufacturing of steel and in the extraction of many metals.

(b) Coal tar

• Coal when processed in the industry gives coke, coal tar, and coal gas.
• Coal tar is used as starting material for manufacturing various substances such as synthetic dyes, drugs, explosives, perfumes, paints, etc.

(c) Coal gas

• Coal when processed in the industry gives coke, coal tar, and coal gas.
• Coal gas is used as a fuel.

Hence, the correct option is (D) as CNG is not obtained from coal.