Chemistry PYQ 251 of 291 · Everyday Chemistry

Water gas is a mixture of

  1. ACO + H2
  2. BCO + O2
  3. CCO + N2
  4. DCO2 + H2
  5. ENone of the above/More than one of the above

BPSC CDPO Prelims 2022

Show answer and explanation

Correct answer: (a) CO + H2

Explanation

Water gas is a mixture of carbon monoxide and hydrogen (CO + H₂), made by passing steam over red-hot coke: C + H₂O → CO + H₂.

It is a fuel and a source of hydrogen. Producer gas is CO with nitrogen (CO + N₂), made by passing air over hot coke.

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