Coal gasification technology can be used in the production of how many of them?

Q. Consider the following substances :

I. Ethanol

II. Nitroglycerine

III. Urea

Coal gasification technology can be used in the production of how many of them?

(a) Only one

(b) Only two

(c) All the three

(d) None

Correct Answer: (b) Only two [Ethanol & Urea]

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