The product of the reaction shown is:

Total number of enol forms possible for the compound formed during the given reaction will be (including stereoisomers):
$CH_3MgBr + CH_3CH_2COCl \to$

The state of hybridisation of $C_2, C_3, C_5$ and $C_6$ of the hydrocarbon $CH_3-C_6(CH_3)_2-C_5H=C_4H-C_3H(CH_3)-C_2 \equiv C_1H$ is in the following sequence:

The product of the following hydrogenation reaction is:
$C_6H_6 + H_2 \xrightarrow{\text{Catalyst, High temperature and pressure}} ?$
Given: $1 \text{ eqv. of } C_6H_6$ and $1 \text{ eqv. of } H_2$.

Which of the following is not a member of the same homologous series?

The major products $A$ and $B$ in the following reactions are respectively:
i) Benzene $\xrightarrow{Cl_2/uv, 500K} A$
ii) $1-$Methylcyclohexene $\xrightarrow{HI} B$