Ethanol is prepared industrially by

Scheme $1$ and $2$ describe the conversion of $P$ to $Q$ and $R$ to $S$,respectively. Scheme $3$ describes the synthesis of $T$ from $Q$ and $S$. The total number of $Br$ atoms in a molecule of $T$ is. . . . . . . .

$(i)$ Draw the structures of all isomeric alcohols of molecular formula $C_5H_{12}O$ and give their $IUPAC$ names.
$(ii)$ Classify the isomers of alcohols in question $(i)$ as primary,secondary and tertiary alcohols.

What is $Cresol$?

Column $(I)$ contains products and Column $(II)$ contains the processes to prepare them. Match the processes in Column $(II)$ with the products in Column $(I)$.

Column - $(I)$ Product	Column - $(II)$ Preparation Process
$(A)$ Butan$-1-$ol	$(i)$ Hydration of propene in the presence of dilute sulfuric acid
$(B)$ Propan$-2-$ol	$(ii)$ Reaction of propanone with methylmagnesium bromide followed by hydrolysis
$(C)$ $2-$Methylpropan$-2-$ol	$(iii)$ Hydroboration of propene followed by reaction with $(NaOH + H_2O_2)$
$(D)$ Propan$-1-$ol	$(iv)$ Catalytic reduction of butanal

Which of the following statements is correct?