Consider the following substances : I. Ethanol II. Nitroglycerine III. Urea Coal gasification technology can be used in the production of how many of them?

Coal gasification produces synthesis gas (syngas), a versatile feedstock used to produce ammonia for urea and nitric acid (essential for nitroglycerine), as well as being catalytically convertible into alcohols like ethanol. Option (B) is a common pitfall because candidates often associate coal gasification primarily with power or fertilizers, neglecting its broad utility in producing synthetic fuels and chemical intermediates for explosives. The core concept tested is the industrial application of syngas as a fundamental building block for diverse organic and inorganic chemical synthesis.