Chemistry - ALCOHOL & ETHER Question with Solution | TestHub

Reaction A: Cumene (isopropylbenzene) is oxidized in the presence of air (${\text{O}}_2$) to form cumene hydroperoxide, which upon subsequent treatment with dilute acid (${\text{H}}_2\text{O}/{\text{H}}^{+}$) yields phenol and acetone. Thus, A matches II.

Reaction B: Acetic acid (${\text{CH}}_3\text{COOH}$) can be converted to ethanol by first reacting with methanol in the presence of an acid catalyst to form methyl acetate (esterification). The ester is then catalytically hydrogenated (${\text{H}}_2$, catalyst) to yield ethanol and methanol. Thus, B matches III.

Reaction C: Propan-1-ol is dehydrated using concentrated ${\text{H}}_2{\text{SO}}_4$ and heat to form propene. Acid-catalyzed hydration (${\text{H}}^{+}/{\text{H}}_2\text{O}$) of propene follows Markovnikov's rule to yield propan-2-ol. Thus, C matches IV.

Reaction D: Benzene is sulfonated using oleum to form benzenesulfonic acid. Heating with $\text{NaOH}$ (fusion) converts it to sodium phenoxide, which on acidification (${\text{H}}^{+}$) gives phenol. Thus, D matches I.

The correct matching is A-II, B-III, C-IV, D-I.

Answer: A-II, B-III, C-IV, D-I