Q.
$BuI \xrightarrow{ AgNO _{2}}( B ) \xrightarrow{ NaNO _{2}+ HCl }{}( C ) \xrightarrow{\overset{\ominus}{ OH }}
\underset{\text{colouration}}{\text{Blood red}}$
Compound (E) is:
Haloalkanes and Haloarenes
Solution: