JEE Main 2021 · ChemistryMultiple choiceSingle correctEasyRecall

JEE Main 24 February 2021, Shift 1, Chemistry Q39

Question 39 of 90 in this shift, Chemistry question 9 of 30, Section A.

The gas released during anaerobic degradation of vegetation may lead to :

(1)Acid rain
(2)Global warming and cancerOfficial answer
(3)Corrosion of metals
(4)Ozone hole

Official answer

Option 2

NTA final key.

Chapter: Environmental Chemistry
Topic: Environmental Chemistry
Idea tested: Greenhouse Effect

Same idea in other shifts

Asked 6× in all

13 Apr 2023, Shift 2 · Q71Which of the following are the Green house gases? A. Water vapour B. Ozone C. $\mathrm{I_2}$ D. Molecular hydrogen Choose the most…EasyOther
24 Jun 2022, Shift 2 · Q72Some gases are responsible for heating of atmosphere (green house effect). Identify from the following the gaseous species which does not…EasySingle correct
16 Mar 2021, Shift 2 · Q40The green house gas/es is (are ) : (A) Carbon dioxide (B) Oxygen (C) Water vapour (D) Methane Choose the most appropriate answer from the…EasyOther
18 Mar 2021, Shift 1 · Q41The statements that are TRUE : (A) methane leads to both global warming and photochemical smog (B) methane is generated from paddy fields…MediumOther
8 Jan 2020, Shift 1 · Q38Among the gases (a) - (e), the gases that cause greenhouse effect are : (a) $\mathrm{CO_2}$ (b) $\mathrm{H_2O}$ (c) CFCs (d)…EasyOther

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.