An alochol $X\left(\mathrm{C}_5 \mathrm{H}_{12} \mathrm{O}\right)$ produces turbidity instantly with conc. $\mathrm{HCl} / \mathrm{ZnCl}_2$. Isomer $(Y)$ of $X$ undergoes dehydration with conc. $\mathrm{H}_2 \mathrm{SO}_4$ at $443 \mathrm{~K}, X$ and $Y$ respectively are

$$ \text { The ratio of } \sigma \text { bonds to } \pi \text { bonds in } Q \text { is } $$

$$ \begin{aligned} &\text { What is ' } Z \text { ' in the given set of reactions? }\\ &\mathrm{C}_6 \mathrm{H}_5 \mathrm{OCH}_3 \xrightarrow{\mathrm{HI}} X+Y \end{aligned} $$

$$ Y \xrightarrow[\text { Anhy. } \mathrm{AlCl}_3]{\mathrm{C}_6 \mathrm{H}_6} \mathrm{Z} $$

The correct statement about the products $B$ and

I. $B$ and $C$ are functional isomers.

II. With $\mathrm{H}_2 /$ Catalyst $B$ gives $1^{\circ}$ amine and $C$ gives $2^{\circ}$ amine.

III. $B$ on acid hydrolysis given formic acid and C gives $\mathrm{C}_3 \mathrm{H}_6 \mathrm{O}_2$.

IV. $C$ forms isocyanate with HgO