Embibe Experts Solutions for Chapter: Environmental Chemistry, Exercise 1: JEE Main - 1 February 2023 Shift 1

Some reactions of ${\mathrm{NO}}_2$ relevant to photochemical smog formation are

Identify $\mathrm{A},\mathrm{B},\mathrm{X}$ and $\mathrm{Y}$

Formation of photochemical smog involves the following reaction in which $\mathrm{A},\mathrm{B}$ and $\mathrm{C}$ are respectively.

(i) ${\mathrm{NO}}_2\stackrel{\mathrm{hu}}{⟶}\mathrm{A}+\mathrm{B}$

(ii) $\mathrm{B}+{\mathrm{O}}_2\to \mathrm{C}$

(iii) $\mathrm{A}+\mathrm{C}\to {\mathrm{NO}}_2+{\mathrm{O}}_2$

Choose the correct answer from the options given below:

The water quality of a pond was analysed and its $\mathrm{BOD}$ was found to be $4$. The pond has

Identify $\mathrm{X}, \mathrm{Y}$ and $\mathrm{Z}$ in the following reaction. (Equation not balanced)

$\mathrm{Cl}\stackrel{\bullet }{\mathrm{O}}+{\mathrm{NO}}_2\to \underset{¯}{\mathrm{X}}\stackrel{{\mathrm{H}}_2\mathrm{O}}{⟶}\underset{¯}{\mathrm{Y}}+\underset{¯}{\mathrm{Z}}$

Given below are two statements :
Statement I : ${\mathrm{H}}_2{\mathrm{O}}_2$ is used in the synthesis of Cephalosporin
Statement II : ${\mathrm{H}}_2{\mathrm{O}}_2$ is used for the restoration of aerobic conditions to sewage wastes.
In the light of the above statements, choose the most appropriate answer from the options given below :

The normal rain water is slightly acidic and its $\mathrm{pH}$ value is $5.6$ because of which one of the following ?

How can photochemical smog be controlled?

The industrial activity held least responsible for global warming is :