The major product $A$ is:

$A$ and $B$ are isomers. Identify $B$.

Match the following reactions in Column-$1$ with their products in Column-$2$.

Column-$1$ (Reaction)	Column-$2$ (Product)
$A$. Benzaldehyde + $Zn-Hg/HCl$	$I$. Cyclohexanol
$B$. Benzoyl chloride + $H_2/Pd-BaSO_4$	$II$. Benzyl alcohol
$C$. Cyclohexanone + $NH_2NH_2/KOH$	$III$. Toluene
	$IV$. Benzaldehyde
	$V$. Cyclohexane

The correct match is:

Rank the following compounds in order of increasing value of the equilibrium constant for hydration,$K_{hyd}$. (smallest value first).
$1$: Cyclobutanone
$2$: Cyclopropanone
$3$: Di-tert-butyl ketone

Correct order of reactivity in nucleophilic addition reaction is:
$(i)$ Benzaldehyde
(ii) $p$-Methylbenzaldehyde
(iii) $p$-Nitrobenzaldehyde
(iv) Acetophenone

The products $C$ and $D$ are given by the following reaction sequence:
$CH_3CH_2COCH_3$ $\xrightarrow[(ii) H_3O^+]{(i) CH_3MgBr} A$ $\xrightarrow[358 \ K]{20\% H_3PO_4} B \text{ (Major)}$ $\xrightarrow[(ii) Zn/H_2O]{(i) O_3} C + D$