JEE Main 2023 — Chemistry Inorganic Chemistry

2023mcqhard

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

$\mathrm{Cl}\overset{\cdot }{O}+{\mathrm{NO}}_{2}\rightarrow \underset{¯}{X}\overset{{H}_{2}O}{\longrightarrow }\underset{¯}{Y}+\underset{¯}{Z}$

Official previous-year question

Held on 31 Jan 2023 · Verified 6 Jul 2026.

Options

A
$X={\mathrm{ClONO}}_{2},Y=\mathrm{HOCl},Z={\mathrm{NO}}_{2}$
B
$X={\mathrm{ClNO}}_{2},Y=\mathrm{HCl},Z={\mathrm{HNO}}_{3}$
C
$X={\mathrm{ClONO}}_{2},Y=\mathrm{HOCl},Z={\mathrm{HNO}}_{3}$
D
$X={\mathrm{ClNO}}_{3},Y={\mathrm{Cl}}_{2},Z={\mathrm{NO}}_{2}$

Did you get this right?

Solution

In the summer, nitrogen dioxide and methane react with chlorine monoxide and chlorine atoms which results in a shrinkage of chlorine and hence prevents ozone layer depletion.

$\mathrm{Cl}\overset{\cdot }{O(g)}+{\mathrm{NO}}_{2}(g)\longrightarrow \mathrm{ClO}\underset{(X)}{N}{O}_{2}(g)$

$\mathrm{Cl}(g)+{\mathrm{CH}}_{4}(g)\rightarrow {\mathrm{CH}}_{3}(g)+\mathrm{HCl}(g)$

During winter, special types of clouds are formed over the Antarctic region. These clouds provide the surface for the hydrolysis of chlorine nitrate to form hypochlorous acid.

${\mathrm{ClONO}}_{2}(g)+{H}_{2}O(g)\rightarrow \mathrm{HOCl}(g)+{\mathrm{HNO}}_{3}(g) (Y)(Z)$

So, $X={\mathrm{ClONO}}_{2},Y=\mathrm{HOCl},Z={\mathrm{HNO}}_{3}$

Your note

JEE Main Inorganic Chemistry in other years

Inorganic Chemistry 2026 Inorganic Chemistry 2025 Inorganic Chemistry 2024 Inorganic Chemistry 2022 Inorganic Chemistry 2021 Inorganic Chemistry 2020 Inorganic Chemistry 2019 Inorganic Chemistry 2018 Inorganic Chemistry 2017 Inorganic Chemistry 2016 Inorganic Chemistry 2015 Inorganic Chemistry 2014

Keep practicing Inorganic Chemistry

Work through every JEE Main Inorganic Chemistry PYQ, year by year.

Browse all Chemistry topics

Options

$X={\mathrm{ClONO}}_{2},Y=\mathrm{HOCl},Z={\mathrm{NO}}_{2}$

$X={\mathrm{ClNO}}_{2},Y=\mathrm{HCl},Z={\mathrm{HNO}}_{3}$

$X={\mathrm{ClONO}}_{2},Y=\mathrm{HOCl},Z={\mathrm{HNO}}_{3}$

$X={\mathrm{ClNO}}_{3},Y={\mathrm{Cl}}_{2},Z={\mathrm{NO}}_{2}$

Solution

In the summer, nitrogen dioxide and methane react with chlorine monoxide and chlorine atoms which results in a shrinkage of chlorine and hence prevents ozone layer depletion.

$\mathrm{Cl}\overset{\cdot }{O(g)}+{\mathrm{NO}}_{2}(g)\longrightarrow \mathrm{ClO}\underset{(X)}{N}{O}_{2}(g)$

$\mathrm{Cl}(g)+{\mathrm{CH}}_{4}(g)\rightarrow {\mathrm{CH}}_{3}(g)+\mathrm{HCl}(g)$

During winter, special types of clouds are formed over the Antarctic region. These clouds provide the surface for the hydrolysis of chlorine nitrate to form hypochlorous acid.

${\mathrm{ClONO}}_{2}(g)+{H}_{2}O(g)\rightarrow \mathrm{HOCl}(g)+{\mathrm{HNO}}_{3}(g) (Y)(Z)$

So, $X={\mathrm{ClONO}}_{2},Y=\mathrm{HOCl},Z={\mathrm{HNO}}_{3}$

JEE Main 2023 — Chemistry Inorganic Chemistry

Options

Did you get this right?

Solution

Your note

JEE Main Inorganic Chemistry in other years

More JEE Main Inorganic Chemistry questions

Other Chemistry topics for JEE Main

Physical Chemistry

Organic Chemistry

Keep practicing Inorganic Chemistry

JEE Main 2023 — Chemistry Inorganic Chemistry

Options

Did you get this right?

Solution

Your note

JEE Main Inorganic Chemistry in other years

More JEE Main Inorganic Chemistry questions

Other Chemistry topics for JEE Main

Physical Chemistry

Organic Chemistry

Keep practicing Inorganic Chemistry