Explain briefly about the composition of water gas.

please answer it fast please.

SOLUTION:
Water gas is a mixture of carbon monoxide and hydrogen gas (CO+H₂). 
It is prepared by passing steam over red hot coke in the presence of nickel catalyst
$H_2{O}_{\left(g\right)} + C_{\left(coke\right)}\underset{1273 K}{\overset{Ni}{\to }} C{O}_{\left(g\right)} + H_{2\left(g\right)}$