Ethanol is prepared industrially by

An alcohol $X \left( C_5 H_{12} O \right)$ produces turbidity instantly with conc. $HCl / ZnCl_2$. Isomer $(Y)$ of $X$ undergoes dehydration with conc. $H_2 SO_4$ at $443 \ K$. $X$ and $Y$ respectively are

In the above reaction,the molecular formula of glycerol increases by:

The major product in the following reaction sequence is:

What are the substances $A, B$ and $C$ in the following reaction?
$\text{Phenol}$ $\xrightarrow{Zn} A$ $\xrightarrow[\text{conc. } H_2SO_4]{HNO_3, 60^{\circ}C} B$ $\xrightarrow{Zn, NaOH(aq)} C$

Read the following statements carefully :
$(A)$ $A$ secondary alcohol on oxidation gives a ketone
$(B)$ Ethanol reacts with conc. $H_2SO_4$ at $180\,^{\circ}C$ to yield ethylene
$(C)$ Methanol reacts with iodine and sodium hydroxide to give a yellow precipitate of iodoform
$(D)$ Hydrogen gas is liberated when sodium is added to alcohol. Select the correct statements from the above set: