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During the carbonisation of coal | |
A. | all tar is evolved at < 600°C. [Wrong Answer] |
B. | evolution of H2 and formation of methane and aromatics occur at > 700°C. [Wrong Answer] |
C. | hard semi-coke starts shrinking at 600°C. [Wrong Answer] |
D. | all (a), (b) and (c). [Correct Answer] |