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.
Mechanical Engineering
Thermodynamics
Difficulty: Easy
Choose an option
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ADrying and crushing coal to a fine powder
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BMoulding finely ground coal under pressure with or without a binder
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CHeating wood with limited air to temperatures not less than 280°C
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DNone of the above
Answer
Correct Answer: None of the above
Explanation
ConceptCarbonisation 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.
Final AnswerNone of the above