Q
Ratio of primary air to secondary air increases with increase in the rank of coal, because the__________________?
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A
A. High rank coals have higher amount of volatile matter
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B
B. Ratio of fixed carbon to volatile matter increases
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C
C. Oxygen content progressively decreases
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D
D. Calorific value of the coal increases
Correct Answer:
B. B. Ratio of fixed carbon to volatile matter increases
