Question

When a mixture of air and steam is passed over
red hot coke, the outgoing gas is
(a) Producer gas
(b) Water gas
(c) Coal gas
(d) None of these gases

Answer 1

When a mixture of air and steam is passed over  red hot coke, the outgoing gas is  (a) Producer gas.

- When air is passed over red hot coke, producer gas is produced.

2C + O2 + N2 → 2CO + N2

- This mixture of carbon monoxide (CO) and Nitrogen gas (N2) is known as producer gas.

Answer 2

(a) Producer gas

Explanation:

Producer gas is a combustible gas manufactured by blowing a mixture of steam and air upwards through a bed of hot coke, or coal, such that the fuel is completely gasified. The gas obtained from coke consists mainly of a mixture of carbon monoxide and hydrogen with the nitrogen from the blast of air.

Option A is the answer.