The temperature at which plastic layer formation takes place during carbonisation of coal varies from ______________ °C ?
Correct answer: A. 350 to 450
- A. 350 to 450
- B. 100 to 150
- C. 550 to 650
- D. 700 to 850
Explanation
Coal softens and forms a plastic layer during carbonisation at approximately 350 to 450°C. This temperature interval is associated with the coal's transition before resolidifying as coke.
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