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# The below reaction involves

$\begin{array}{1 1}(a)\;\text{nucleophilic addition across double bond}\\(b)\;\text{free radical addition across double bond}\\(c)\;\text{electrophilic addition across double bond}\\(d)\;\text{no effect of the CO group on the C=C bond}\end{array}$

Can you answer this question?

Above reaction is only nucleophilic addition across double bond is belived to take place by the following mechanism.
Hence (a) is the correct answer.
answered Feb 19, 2014