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Saturday, 31 October

JEE Main 2022 · ChemistryMultiple choiceSingle correctEasyConceptual

JEE Main 28 June 2022, Shift 2, Chemistry Q72

Question 72 of 90 in this shift, Chemistry question 12 of 30, Section A.

Correct statement about photo-chemical smog is :
  1. (1)It occurs in humid climate.
  2. (2)It is a mixture of smoke, fog and SO2\mathrm{SO_2}.
  3. (3)It is reducing smog.
  4. (4)It results from reaction of unsaturated hydrocarbons.Official answer

Official answer

Option 4

NTA final key.

Chapter
Environmental Chemistry
Topic
Environmental Chemistry
Idea tested
Classical vs Photochemical Smog

Same idea in other shifts

Asked 7× in all
  1. 6 Apr 2023, Shift 1 · Q71The possibility of photochemical smog formation is more atEasySingle correct
  2. 25 Jul 2022, Shift 1 · Q72The photochemical smog does not generally contain :EasySingle correct
  3. 27 Jun 2022, Shift 1 · Q72Given below are two Statements : Statement I : Classical smog occurs in cool humid climate. It is a reducing mixture of smoke, fog and…EasyTwo statements
  4. 4 Aug 2021, Shift 2 · Q40The INCORRECT statement among those given below regarding smog isEasySingle correct
  5. 25 Feb 2021, Shift 1 · Q41Given below are two statements : Statement I : An allotrope of oxygen is an important intermediate in the formation of reducing smog.…MediumTwo statements
  6. 17 Mar 2021, Shift 1 · Q40Reducing smog is a mixture of :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.