The process of heating coal in the absence of air to produce coal gas, coal tar, and coke is called: MCQ with Answer and Explanation

The process of heating coal in the absence of air to produce coal gas, coal tar, and coke is called:
A. Cracking
B. Destructive distillation
C. Carbonization
D. Fractional distillation
Answer: Option B
Solution (By JKSSB Mock Tests)
Destructive distillation is the process of heating a carbon-containing substance (like coal or wood) in the absence of air to break it down into various products. For coal, it yields coke, coal tar, coal gas, and coal dust. Fractional distillation is used for separating liquid mixtures like petroleum.

Discuss this Question (0)

No comments yet. Be the first to start the discussion!

Practice More chemistry Questions

Question #1
Which of the following is a primary air pollutant?
A. Sulphuric acid
B. Carbon monoxide
C. Ozone
D. PAN (Peroxyacetyl nitrate)

Correct Answer: Option B


Explanation:
Primary air pollutants are emitted directly from a source. Carbon monoxide (CO), sulfur dioxide (SO₂), and nitrogen oxides (NOx) are primary pollutants. Ozone, PAN, and sulfuric acid are secondary pollutants, formed in the atmosphere by reactions of primary pollutants.

This question belongs to: Science chemistry
Question #2
Which of the following is a compound?
A. Water
B. Steel
C. Air
D. Oxygen

Correct Answer: Option A


Explanation:
Water (H₂O) is a compound – a pure substance composed of two or more elements chemically combined in a fixed ratio. Oxygen is an element. Air is a mixture of gases. Steel is an alloy (mixture). Compounds can be broken down by chemical methods.

This question belongs to: Science chemistry
Question #3
During electrolysis, reduction occurs at the:
A. Anode
B. Electrolyte
C. Salt bridge
D. Cathode

Correct Answer: Option D


Explanation:
Cathode is where reduction (gain of electrons) takes place in both electrolytic and galvanic cells. Anode is where oxidation occurs. Mnemonic: RED CAT (Reduction at Cathode), AN OX (Oxidation at Anode).

This question belongs to: Science chemistry