Identify $Z$ in the series:
$CH_2 = CH_2$ $\xrightarrow{HBr} X$ $\xrightarrow[Hydrolysis, Na_2CO_3]{I_2 (excess)} Z$

Which of the following statements about glycerol is incorrect?

Which of the following will not produce $CH_4$ gas when reacted with $CH_3MgBr$?

Ethanol,when reacted with $PCl_5$,gives $A$,$POCl_3$,and $HCl$. $A$ reacts with silver nitrite $(AgNO_2)$ to form $B$ (major product) and $AgCl$. $A$ and $B$ are respectively:

Compound $A, C_{8}H_{10}O,$ is found to react with $NaOI$ (produced by reacting $Y$ with $NaOH$) and yields a yellow precipitate with a characteristic smell. $A$ and $Y$ are respectively:

$A$ mixture of methanol vapours and air is passed over heated copper. The products are