Question

Chemical formula of Water-gas is:

• A. CO$_2$ + H$_2$O
• B. CO + H$_2$
• C. SO$_2$ + CO$_2$ + Heat
• D. CO + H$_2$O$_2$

Hint:

\textbf{Water-gas = CO + H$_2$}. It’s a product of coke and steam reaction, often used in synthesis and metallurgy.

Answer 1

The Correct Option is B

Water-gas is a synthesis gas composed mainly of carbon monoxide (CO) and hydrogen (H$_2$). It is produced by passing steam over red-hot coke (carbon), following the reaction: \[ \text{C} + \text{H}_2\text{O} \rightarrow \text{CO} + \text{H}_2 \] This gas mixture is used as a fuel and as a reducing agent in industrial processes.

• (A) CO$_2$ + H$_2$O is not water-gas — incorrect.
• (B) CO + H$_2$ is the correct composition of water-gas — correct.
• (C) SO$_2$ + CO$_2$ + Heat is not related — incorrect.
• (D) CO + H$_2$O$_2$ is not a known industrial gas — incorrect.