$(20)$ which compound$($s$)$ is aromatic?

N

o

p

$11$

Q

$($a$)O$ and $P$

$($b$)O$ and $Q$

$($c$)$ Unly $0$

$($d$)$ N&P

$(21)$ When compound $x(C_8{H}_8)$ is treated with acidic potassium permanganis bubbles are realesed durity the reaction and compound $x$ is also produad. compound $Y$ has parent peak at $122\frac{m}{2}$ in its mass spectrum and shows a very strong absorption band at $1670c{m}^{-1}$ in its infrared spectrum. what is compaind $Y?$

$($a$)4-$ methylbenzoic acid' $($c$)$ benzoic adid

$($b$)$ phenylacetic acid.

$($d$)4-$ nydroxy toluens