A racemic mixture of $(\pm )$ $2$-phenylpropanoic acid on esterification with $(+)$ $2$-butanol gives two ester. Mention the stereochemistry of the two esters produced.

Five isomeric $para-$disubstituted aromatic compounds $A$ to $E$ with molecular formula $C_8{H}_8{O}_2$ were given for identification. Based on the following observations, give structures of the compounds. 

i) Both $A$ and $B$ form a silver mirror with Tollen's reagent, also $B$ gives a positive test with $FeC{I}_3$ solution.

ii) $C$ gives positive iodoform test. 

iii) $D$ is readily extracted in aqueous $NaHC{O}_3$ solution.

iv) $E$ on acid hydrolysis gives $1,4-$ dihydroxybenzene.

The product of acid hydrolysis of $\mathrm{P}$ and $\mathrm{Q}$ can be distinguished by-

With reference to the scheme given, which of the given statements about $\mathrm{T},\mathrm{U},\mathrm{V}$ and $\mathrm{W}$ is (are) correct ? 

Reagent(s) which can be used to bring about the following transformation is(are):

In the following sequence of reactions?

$\mathrm{Toluene} \stackrel{{\mathrm{KMnO}}_4}{\to }\mathrm{A}\stackrel{{\mathrm{SOCl}}_2}{\to }\mathrm{B}\underset{{\mathrm{BaSO}}_4}{\overset{{\mathrm{H}}_2/\mathrm{Pd}}{\to }}\mathrm{C}$

The product $\mathrm{C}$ is:

The major product obtained in the following reaction is :  

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