1.

In which of the following reaction, a visible change would be observed?

Answer»

1-butene + HCl (AQ) `to`
2-butene + `Cl_2 underset(FeCl_3)OVERSET(C Cl_4)to`
1-pentyne + `HgSO_4 overset(H_2SO_4)to`
1-pentyne + `NaNH_2(aq)to`

Solution :TERMINAL alkyne react with `NaNH_2` giving EFFERVESCENCE of `NH_3`


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