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Which of the following way is used to fed hydrogenation processes in hydrogenation of coal?

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Which of the following way is used to fed hydrogenation processes in hydrogenation of coal?

(a) Feeding the non powdered coal directly in presence of oxygen

(b) By feeding paste of pulverized coal and heavy oil

(c) Treating of non powered coal by solvent extraction

(d) Feeding the non powdered coal directly along with stream of hydrogen

The question was asked by my college director while I was bunking the class.

My query is from Natural Products topic in section Natural Products of Chemical Technology

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The correct option is (b) By feeding paste of pulverized coal and heavy oil

The best I can explain: Various ways used for feeding coal to hydrogenation processes are i. Treating powdered coal by solvent extraction and then feeding ii. By feeding paste of pulverized coal and heavy oil iii. Feeding powdered coal directly with stream of hydrogen.

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