The reactions which produce alcohol as the product are :

A. $\mathrm{CH}_4 + \mathrm{O}_2 \xrightarrow{\mathrm{Mo}_2\mathrm{O}_3,\ \Delta} $

B. $2\mathrm{CH}_3\mathrm{CH}_3 + 3\mathrm{O}_2 \xrightarrow{(\mathrm{CH}_3\mathrm{COO})_2\mathrm{Mn},\ \Delta} $

C. $(\mathrm{CH}_3)_3\mathrm{CH} \xrightarrow{\mathrm{KMnO}_4} $

D. $ 2\mathrm{CH}_4 + \mathrm{O}_2 \xrightarrow{\mathrm{Cu}/523\ \mathrm{K}/100 \ \mathrm{atm}.} $

E. $\mathrm{CH}_3-\mathrm{CH}=\mathrm{CH}-\mathrm{CH}_3 \xrightarrow{\mathrm{KMnO}_4/\mathrm{H}^+} $

Choose the correct answer from the options given below :

$$ \text { Consider the following reaction sequence } $$

Compound $(\mathrm{y})$ develops characteristic colour with neutral $\mathrm{FeCl}_3$ solution.

Identify the INCORRECT statement from the following for the above sequence.

$$ \text { From the following, how many compounds contain at least one secondary alcohol?} $$

Choose the correct answer from the options given below :

A hydroxy compound $(\mathrm{X})$ with molar mass $122 \mathrm{~g} \mathrm{~mol}^{-1}$ is acetylated with acetic anhydride, using a large excess of the reagent ensuring complete acetylation of all hydroxyl groups. The product obtained has a molar mass of $290 \mathrm{~g} \mathrm{~mol}^{-1}$. The number of hydroxyl groups present in compound $(\mathrm{X})$ is: