$\mathrm{Assertion} :-$Phenols give $\mathrm{o}$- and $\mathrm{p}$-Nitrophenol on nitration with conc. ${\mathrm{HNO}}_3$ and ${\mathrm{H}}_2{\mathrm{SO}}_4$ mixture.

$\mathrm{Reason} :-$ $-\mathrm{OH}$ group in phenol shows-$\mathrm{M}$ effect.

Assertion (A): $\mathrm{m}-$Nitrophenol is less acidic than $\mathrm{p}-$nitrophenol.

Reason (R): $\mathrm{p}-$Nitrophenol has intermolecular-$\mathrm{H}-$bonding.

$\mathrm{Assertion} :- \mathrm{Ph}-\mathrm{O}-{\mathrm{C}}_2{\mathrm{H}}_5$ can be prepared form $\mathrm{PhONa}$ and ethyl lodide.

$\mathrm{Reason} :-$ Aryl halides are less reactive substrates for nucleophilic substitution reaction.

$\mathrm{Assertion} :-$ Methoxy ethane has less boiling point than propanol.

$\mathrm{Reason} :-$ Methoxy ethane is more polar than propanol.