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Question 46

Given below are two statements:
Statement I : The process of producing syn-gas is called gasification of coal.
Statement II : The composition of syn-gas is CO + CO$$_2$$ + H$$_2$$ (1 : 1 : 1).
In the light of the above statements, choose the most appropriate answer from the options given below:

Coal gasification is the reaction of pulverised coal with a controlled amount of $$\text{O}_2$$ and $$\text{H}_2\text{O}$$ at about 1270 - 1570 K.
The main reactions are $$$\text{C} + \text{H}_2\text{O} \rightarrow \text{CO} + \text{H}_2$$$ and $$$\text{C} + \tfrac{1}{2}\text{O}_2 \rightarrow \text{CO}$$$.
The gaseous mixture obtained, rich in $$\text{CO}$$ and $$\text{H}_2$$, is called synthesis gas (syn-gas). Producing this mixture from coal is, by definition, gasification of coal. Therefore Statement I is true.

Syn-gas contains mainly $$\text{CO}$$ and $$\text{H}_2$$ in approximately a 1 : 1 ratio. $$\text{CO}_2$$, if present, is only a minor impurity and never equals the other two components. Hence the composition $$\text{CO} + \text{CO}_2 + \text{H}_2\; (1\!:\!1\!:\!1)$$ given in Statement II is incorrect. Statement II is false.

Thus, Statement I is true but Statement II is false. Hence the correct choice is Option B.

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