When optically active halide is attacked by `CN^(-)`, the product obtained is a racemic mixture. Hence, the halide should be

Options

A. primary
B. sec-halide
C. tert-halide
D. none of these

Answer

C

Explanation

When an optically active hlide follows `S_N1` Mechanism, partially racemised products are formed.
`R_(1)-overset(R_(2))overset(|)underset(R_(3))underset(|)(C )-Cl overset(CN^(-))rarr underset("Racemised Products")(R_(1)-overset(R_(2))overset(|)underset(R_(3))underset(|)(C )-CN+NC-overset(R_(2))overset(|)underset(R_(3))underset(|)(C )-R_(1))`
`3^(@)` halides are more susceptible to `S_N1` mechanism