(A) High rank coals have higher amount of volatile matter
(B) Ratio of fixed carbon to volatile matter increases
(C) Oxygen content progressively decreases
(D) Calorific value of the coal increases
(A) High rank coals have higher amount of volatile matter
(B) Ratio of fixed carbon to volatile matter increases
(C) Oxygen content progressively decreases
(D) Calorific value of the coal increases
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