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Carbonisation of coal is the process of | |
A. | pulverising coal in inert atmosphere [Wrong Answer] |
B. | heating wood in a limited supply of air at temperatures below 300°C [Wrong Answer] |
C. | strongly heating coal continuously for about 48 hours in the absence of air in a closed vessel [Correct Answer] |
D. | binding the pulverised coal into brickettes [Wrong Answer] |
E. | enriching carbon in the coal. [Wrong Answer] |