In which of the following reactions is the migration of an alkyl group from carbon to oxygen observed?

How are the following conversions carried out?
$(i)$ Propene $\rightarrow$ Propan$-2-$ol.
$(ii)$ Benzyl chloride $\rightarrow$ Benzyl alcohol.
$(iii)$ Ethyl magnesium chloride $\rightarrow$ Propan$-1-$ol.
$(iv)$ Methyl magnesium bromide $\rightarrow$ $2-$Methylpropan$-2-$ol.

Choose the correct option by putting $T$ for the true statement and $F$ for the false statement.
$(i)$ Phenol is more acidic as compared to ethanol.
$(ii)$ Melting point of $o$-nitrophenol is lesser than $p$-nitrophenol.
$(iii)$ Neutralization of phenol is done with $NaHCO_3$.
$(iv)$ Nucleophilic substitution reaction is taking place in the aromatic ring of phenol.

Identify the incorrect match with respect to compounds to be distinguished and the reagent used.

$1^o, 2^o, 3^o$ alcohols are distinguished by

$HOOC-COOH + HO^{18}CH_2-CH_2^{18}OH \xrightarrow[H^+]{\Delta} (A)$; Product $(A)$ is: