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Marsh gas mainly contains

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

1 Answer

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 by sreemathi.v