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# Aqueous solution of following compounds are electrolysed.Acetylene gas is obtained from

$\begin{array}{1 1}(a)\;\text{Sodium acetate}&(b)\;\text{Sodium maleate}\\(c)\;\text{Sodium fumarate}&(d)\;\text{Both (b) and (c)}\end{array}$

Similarly acetylene is obtained from sodium fumarate.
Hence (d) is the correct answer.