Oxalic acid + $A \rightarrow$ Glycerol monooxalate. If $A \xrightarrow{conc.\,H_2SO_4} B$,then $B$ is:

$A$ mixture of $1 \ g$ each of chlorobenzene,aniline,and benzoic acid is dissolved in $50 \ mL$ of ethyl acetate and placed in a separating funnel. $5 \ M \ NaOH$ $(30 \ mL)$ was added to the same funnel. The funnel was shaken vigorously and then kept aside. The ethyl acetate layer in the funnel contains:

In which of the following reactions is the migration of an alkyl group from carbon to oxygen observed?

Sum of number of $1^o$ alcoholic groups in product $(P)$ and $(Q)$ is

$1.12 \, mL$ of a gas is produced at $STP$ by the action of $4.12 \, mg$ of alcohol with methyl magnesium iodide. The molecular mass of the alcohol is:

In the given diol,which of the following statements is correct regarding the acidity of the hydroxyl groups at $C_2$ and $C_5$?