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

Acetic anhydride is obtained by the reaction of:

What is the product formed by the reaction of cane sugar with concentrated nitric acid?

$C_6H_5NH_2$ $\xrightarrow{NaNO_2/HCl} X$ $\xrightarrow{Cu_2(CN)_2} Y$ $\xrightarrow{H_2O/H^{+}} Z$
$Z$ is identified as :

Write the method of preparation of carboxylic acid from acyl halides and anhydride compounds.

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)