The reagent $X$ in the reaction sequence: $(CH_3)_3C-CH=CH_2$ $\xrightarrow[THF]{X} Y$ $\xrightarrow[NaOH]{NaBH_4} (CH_3)_3C-CH(OH)-CH_3$ is:

Give the structures and $IUPAC$ names of the products expected from the following reactions:
$(a)$ Catalytic reduction of butanal.
$(b)$ Hydration of propene in the presence of dilute sulphuric acid.
$(c)$ Reaction of propanone with methylmagnesium bromide followed by hydrolysis.

Alcoholic fermentation is brought about by the action of

Among the following,the appropriate reactants for the preparation of $1$-ethyl cyclohexanol are:

The reaction,water gas $(CO + H_2) + H_2$ at $673 \ K$ and $300 \ \text{atm}$ in the presence of the catalyst $Cr_2O_3/ZnO$ is used for the manufacture of:

In order to prepare $1$-chloropropane,which of the following reactants can be employed?