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Which one of the following is water gas ?

June 1, 2025 by rawan239

Which one of the following is water gas ?

Mixture of carbon monoxide and hydrogen

Mixture of carbon monoxide and nitrogen

Mixture of carbon dioxide and water vapour

Mixture of carbon monoxide and water vapour

This question was previously asked in

UPSC NDA-1 – 2016

Download PDF Attempt Online

The correct option is A.

Water gas is a synthesis gas mixture primarily consisting of carbon monoxide (CO) and hydrogen (H₂). It is produced by passing steam over hot carbon (like coke or coal) at high temperatures (typically 700-1000 °C). The reaction is C + H₂O → CO + H₂.

Producer gas is another type of synthesis gas, produced by passing air over hot carbon, and primarily consists of carbon monoxide (CO) and nitrogen (N₂), along with some hydrogen and carbon dioxide. Water gas is a more energy-rich fuel than producer gas because it contains hydrogen and lacks the large proportion of inert nitrogen.

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