Benzophenone can be converted into benzene using

Assertion : Benzaldehyde is more reactive than ethanol towards nucleophilic attack.
Reason : The overall effect of $-I$ and $+R$ effect of phenyl group decreases the electron density on the carbon atom of $>C=O$ group in benzaldehyde.

$CH_3CO_2Et + (CH_2)_5(MgBr)_2 \xrightarrow[(2) H^{+}]{(1)} \mathop {C_7H_{14}O}\limits_{(A)}$ ; compound $(A)$ will be

Identify the final product of the following reaction sequence:
$o$-Phthalaldehyde $\xrightarrow{\text{OH}^-} A$ $\xrightarrow{\text{H}^+, \Delta} ?$

$CH_3COOCH_2CH_3 + PhMgBr_{(excess)} \to P \xrightarrow{H_2O} Q$;
$Q$ is

Which of the following undergoes haloform reaction?
$ (i) \ CH_3CH_2COCH_2Cl $
$ (ii) \ C_6H_5COCH_3 $
$ (iii) \ C_6H_5COCHCl_2 $
$ (iv) \ CH_3CH_2COCCl_3 $