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  4. By passing air over red hot coke the gas obtained is:

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Q. By passing air over red hot coke the gas obtained is:

ManipalManipal 2002

Solution:

When air is passed over red hot coke than a mixture of $CO$ and $N _{2}$ is obtained. It is known as producer gas.
$2C +\underset{\text { Air }} {O_{2}}+4 N _{2} \longrightarrow \underset{\text{Producer gas}}{2CO + 4N_2}$