EXERCISE-I (Conceptual Questions)

The reagent used for the separation of acetaldehyde from acetophenone is:

Melting points are normally the highest for

In this reaction, ${\mathrm{CH}}_3\mathrm{CHO}+\mathrm{HCN}⟶{\mathrm{CH}}_3\mathrm{CH}\left(\mathrm{OH}\right)\mathrm{CN}\stackrel{{\mathrm{H}}_2\mathrm{O}}{\to }{\mathrm{CH}}_3\mathrm{CH}\left(\mathrm{OH}\right)\mathrm{COOH}$, an asymmetric centre is generated. The acid obtained would be:

Acetic acid exists as dimer in benzene due to

Which one of the following, on treatment with $50\%$ aq. $\mathrm{NaOH}$, yields the corresponding alcohol and acid:

Acetophenone when reacted with a base ${\mathrm{C}}_2{\mathrm{H}}_5\mathrm{ONa}$, yields a stable compound which has the structure :

In a set of reactions, ethyl benzene yielded a product $\mathrm{D}$ 

$\text{'}\mathrm{D}\text{'}$ Would be :-

An organic compound ${}^{\text{'}}\mathrm{X}^{\text{'}}$, having the molecular formula ${\mathrm{C}}_5{\mathrm{H}}_{10}\mathrm{O}$, yields phenyl hydrazone and gives a negative response to the iodoform and the Tollen's test. It produces $\mathrm{n}-$pentane on reduction. ${}^{\text{'}}\mathrm{X}^{\text{'}}$ could be