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Pick out the correct statement. | |
A. | Oxygen content decreases from lignite to bituminous coal as the coalification increases. [Wrong Answer] |
B. | The less the oxygen content, better is the coal, as it reduces the calorific value. [Wrong Answer] |
C. | With increase in oxygen content, moisture holding capacity of coal increases and the caking power decreases. [Wrong Answer] |
D. | all (a), (b) and (c) [Correct Answer] |