Question

Which of the following is a water gas?

• A. Air dissolved in water
• B. Water vapour present in air
• C. A mixture of $\mathrm{CO}\mathrm{and}{\mathrm{H}}_2$
• D. A mixture of $\mathrm{CO}\mathrm{and}{\mathrm{H}}_2\mathrm{O}$ (Steam)

Answer 1

The correct option is C

A mixture of $\mathrm{CO}\mathrm{and}{\mathrm{H}}_2$

The explanation for the correct option-

• Water gas is a combination of CO and H₂.
• It has its major application in the formation of fuel gas, which is produced when it is mixed with producer gas.
• Hence, option C is the correct answer.

The explanation for incorrect options -

• Air dissolved in water means a mixture of gases like ${\mathrm{N}}_2,{\mathrm{O}}_2,{\mathrm{CO}}_2$ in water.
• Water vapor present in the air is a mixture of ${\mathrm{H}}_2\mathrm{O}$ in the form of vapors with gases like ${\mathrm{N}}_2,{\mathrm{O}}_2,{\mathrm{CO}}_2$.
• A mixture of $\mathrm{CO}\mathrm{and}{\mathrm{H}}_2\mathrm{O}$ on reaction given carbon dioxide and hydrogen gas.