JEE Main 2021 · ChemistryMultiple choiceSingle correctMediumConceptual

JEE Main 31 August 2021, Shift 2, Chemistry Q36

Question 36 of 90 in this shift, Chemistry question 6 of 30, Section A.

The number of S=O bonds present in sulphurous acid, peroxodisulphuric acid and pyrosulphuric acid, respectively are :

(1)2, 4 and 3
(2)1, 4 and 4Official answer
(3)1, 4 and 3
(4)2, 3 and 4

Official answer

Option 2

NTA final key.

Chapter: The p-Block Elements
Topic: Group 15 & 16
Idea tested: Sulfur Oxoacids

Same idea in other shifts

Asked 5× in all

9 Apr 2024, Shift 2 · Q89Number of oxygen atoms present in chemical formula of fuming sulphuric acid is ________.EasyNumerical value
29 Jul 2022, Shift 2 · Q87Consider the following sulphur based oxoacids. $\mathrm{H_2SO_3}$ , $\mathrm{H_2SO_4}$ , $\mathrm{H_2S_2O_8}$ and $\mathrm{H_2S_2O_7}$ .…EasyNumerical value
28 Jun 2022, Shift 2 · Q71Which of the following oxoacids of sulphur contains “S” in two different oxidation states ?MediumSingle correct
8 Jan 2020, Shift 1 · Q35The number of bonds between sulphur and oxygen atoms in $\mathrm{S_2O_8^{2-}}$ and the number of bonds between sulphur and sulphur atoms…MediumSingle 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.