$1^o, 2^o, 3^o$ alcohols are distinguished by

Which of the following compounds will undergo a Friedel-Crafts alkylation reaction?

The structure of the product formed in the reaction given below is:

Esterification of the acid $P$ with the alcohol $Q$ will give:

Which of the following reactions will produce a primary alcohol?

Number of isomeric compounds with molecular formula $C_9H_{10}O$ which $(i)$ do not dissolve in $NaOH$ $(ii)$ do not dissolve in $HCl$ $(iii)$ do not give orange precipitate with $2,4-DNP$ $(iv)$ on hydrogenation give identical compound with molecular formula $C_9H_{12}O$ is $...........$