What is obtained when toluene is chlorinated in the presence of light and heat,followed by treatment with aqueous $NaOH$?

Identify the product formed in the following reaction: $CH_3CH_2MgBr$ $\xrightarrow{i. \text{Dry ice} / \text{dry ether}}$ $\xrightarrow{ii. \text{dil. } HCl} \text{Product}$

Grignard reagent $RMgBr$ $(P)$ reacts with water and forms a gas $(Q)$. One gram of $Q$ occupies $1.4 \ dm^3$ at $STP$. $(P)$ on reaction with dry ice in dry ether followed by $H_3O^{+}$ forms a compound $(Z)$. $0.1 \ mole$ of $(Z)$ will weigh . . . . . . $g$. (Nearest integer)

Identify the product formed when ethyl benzene reacts with nitric acid.

The compound $X$ in the reaction is: $X$ $\xrightarrow{CH_3MgI} Y$ $\xrightarrow{\text{hydrolysis}} Mg(OH)I + CH_3COOH$

What is $P$ in the following reaction?