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# Marsh gas mainly contains

$\begin{array}{1 1}(a)\;C_2H_2&(b)\;CH_4\\(c)\;H_2S&(d)\;CO\end{array}$

Can you answer this question?

Methane is the principal product of organic decay in swamps and marshes.The gas being set free by the action of bacteria,this method of formation in nature has given rise to the name marsh gas for methane.
Hence (b) is the correct answer.
answered Mar 21, 2014