1.

CaC_(2) overset(H_(2)O)to A overset(Cu_(2)Cl_(2))underset(NH_(4)Cl)to B overset((1)1 eqv. HCl)underset((2)Mg//"ether"(3)CO_(2)//H_(2)//OH)to C In above reaction product (C ) is

Answer»

`CH_(2)=CH-COOH`
`HC-=C-COOH`
`HOOC-C-=C-COOH`
`CH_(2)=CH-UNDERSET(COOH)underset(|)=CH_(2)`

Answer :4


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