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Carbonisation of coal: identify the correct description of the process Select the statement that correctly defines carbonisation of coal (coke-making by heating coal in the absence of air). Choose the correct option.

Difficulty: Easy

Drying and crushing coal to a fine powder
Moulding finely ground coal under pressure with or without a binder
Heating wood with limited air to temperatures not less than 280°C
None of the above

Correct Answer: None of the above

Explanation:

Concept
Carbonisation of coal (coking) is the strong heating of coal in the absence of air to drive off volatiles and obtain coke. The options given describe other operations:

(a) Pulverisation (size reduction), not carbonisation.
(b) Briquetting (agglomeration), not carbonisation.
(c) Refers to wood (charcoal making) at relatively low temperature; the question is about coal.

Carbonisation of coal: identify the correct description of the process Select the statement that correctly defines carbonisation of coal (coke-making by heating coal in the absence of air). Choose the correct option.

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