In case of humic coals, hydrogen percentage varies from

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Mr. Dubey

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Q. In case of humic coals, hydrogen percentage varies from

(A) 4 to 6 percent
(B) 10 to 15 percent
(C) 16 to 20 percent
(D) 20 to 30 percent

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✅ Correct Answer: (A) 4 to 6 percent

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