Write an equation for the preparation of nitro alkanes from alkyl amines.

In the reaction given below, $\mathrm{X}$ is

Find out the product for the following reaction.

${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{Br} + {\mathrm{NaNO}}_2 \stackrel{\mathrm{alcohol}/∆}{\to }$

A nitrogenous substance (X) is treated with ${\mathrm{HNO}}_2$ and the product so formed is further treated with $\mathrm{NaOH}$ solution, which produces blue colouration. Which of the following can (X) be?

Represent the union of two sets by Venn diagram for each of the following.

$X=\{x | x$ is a prime number between $80$ and $100\}$

$Y=\{y | y$ is an odd number between $90$ and $100\}$

Complete the given reaction.

${\mathrm{CH}}_3-\mathrm{Br}+{\mathrm{AgNO}}_{2 } \to \mathrm{\_\_\_\_\_} + \mathrm{\_\_\_\_\_}$

Find out the product for the following reaction.

${\mathrm{CH}}_3\mathrm{CH}\left(\mathrm{Cl}\right)\mathrm{COOH} \underset{{\mathrm{H}}_2\mathrm{O}/∆}{\overset{{\mathrm{NaNO}}_2}{\to }} ?\left(\mathrm{X}\right)$

Identify $\mathrm{X}$ and $\mathrm{Y}$ in the given reaction.

$\mathrm{Cl}-{\mathrm{CH}}_2-{\mathrm{COO}}^{-}{\mathrm{Na}}^{+} + \mathbf{X} \to \left[{\mathrm{NO}}_2-{\mathrm{CH}}_2-{\mathrm{COO}}^{-}{\mathrm{Na}}^{+}\right]\stackrel{{\mathrm{H}}_2\mathrm{O}}{\to }\mathbf{Y} +{\mathrm{NaHCO}}_3$

Write the structures of compounds $\mathrm{A}, \mathrm{B}$ and $\mathrm{C}$ in the following reaction.

${\mathrm{C}}_6{\mathrm{H}}_5{{\mathrm{N}}_2}^{+}{{\mathrm{BF}}_4}^{-}\stackrel{{\mathrm{NaNO}}_2/\mathrm{Cu}}{\to } \mathrm{A} \stackrel{\mathrm{Fe}/\mathrm{HCl}}{\to } \mathrm{B}\stackrel{{\mathrm{CH}}_3\mathrm{COCl}/ \mathrm{Pyridine}}{\to } \mathrm{C}$