Which of the following oxoacid of sulphur has -O-O- linkage ?

NEET UG 2020 · Chemistry · Question 101

NEET 2020 Chemistry, question 101

Question 101 of the NEET 2020 paper (code E1) is a Chemistry question from The p-Block Elements (Class 12). Its idea, Oxoacids of Sulphur, was asked twice, in 2020 and 2023, across NEET 2017–2026. The NTA final answer key gives option 3.

Updated 2026-10-08

Q101 · Chemistry

-O-O-

\mathrm{H_2SO_3}

Official answer: option 3 · NTA final answer key

Same idea

Oxoacids of Sulphur, in other papers

NEET asked this idea twice, in 2020 and 2023. The other question below.

2023 Q 92 Match List - I with List - II : List - I (Oxoacids of Sulphur) | List - II (Bonds) A. Peroxodisulphuric acid | I. Two S-OH, Four S=O, One\dots Match the lists \cdot Medium

Oxoacids of Sulphur: every question and how it was framed

The chapter

The p-Block Elements (Class 12) in ten years of NEET

23 questions from 2017–2026, asked in 10 of 10 papers, about 2.2 a paper. p-Block Elements (Groups 15-18) alone had 23.

Chapter analysis

Oxoacids of Sulphur, in other papers

The p-Block Elements (Class 12) in ten years of NEET

The p-Block Elements (Class 12): questions per paper