JEE Main 2022 · ChemistryMultiple choiceSingle correctEasyRecall

JEE Main 26 July 2022, Shift 1, Chemistry Q70

Question 70 of 90 in this shift, Chemistry question 10 of 30, Section A.

\dot{\mathrm{C}}\mathrm{l} + \mathrm{CH_4} \rightarrow \mathrm{A} + \mathrm{B}

A and B in the above atmospheric reaction step are :

(1) $\mathrm{C_2H_6}$ and $\mathrm{Cl_2}$
(2) $\dot{\mathrm{C}}\mathrm{HCl_2}$ and $\mathrm{H_2}$
(3) $\dot{\mathrm{C}}\mathrm{H_3}$ and HClOfficial answer
(4) $\mathrm{C_2H_6}$ and HCl

Official answer

Option 3

NTA final key.

Chapter: Environmental Chemistry
Topic: Environmental Chemistry
Idea tested: Ozone Layer Depletion

Same idea in other shifts

Asked 8× in all

8 Apr 2023, Shift 2 · Q70Which of these reactions is not a part of breakdown of ozone in stratosphere?MediumSingle correct
11 Apr 2023, Shift 2 · Q71Which of the following compounds is an example of Freon?EasySingle correct
13 Apr 2023, Shift 1 · Q72The radical which mainly causes ozone depletion in the presence of UV radiations is :EasySingle correct
4 Aug 2021, Shift 1 · Q41In stratosphere, chlorofluorocarbon compounds break down by UV radiations, releasing 'X' free radical, which further causes ozone layer…EasySingle correct
27 Aug 2021, Shift 1 · Q41The gas ‘A’ is having very low reactivity reaches to stratosphere. It is non-toxic and non-flammable but dissociated by UV-radiations in…EasySingle correctHas a figure
25 Jul 2021, Shift 2 · Q41Given below are two statements : Statement I : Chlorofluoro carbons breakdown by radiation in the visible energy region and release…MediumTwo statements
2 Sep 2020, Shift 1 · Q38The statement that is not true about ozone is :EasySingle correct

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.