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

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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