(A) carbonisation of coal (X)
(B) passing steam over incandescent coke ()
(C) passing air and a large amount of steam over waste coal at about 65°C (X)
(D) partial combustion of caol, eke, anthractie coal or charcoal in a mixed air steam blast (X)
(E) same way as the natural gas (X)
Answers: Water gas is produced by passing steam over incandescent coke.