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Friday, 9 October

NEET UG 2017 · Chemistry · Question 65

NEET 2017 Chemistry, question 65

Question 65 of the NEET 2017 paper (code A) is a Chemistry question from The p-Block Elements (Class 12). Its idea, Structures of Sulphur Oxoanions, was asked only this once in NEET 2017–2026. The CBSE official answer key gives option 2.

Updated 2026-10-08

Q65 · Chemistry

In which pair of ions both the species contain S−-S bond ?

  1. 1S2O72−\mathrm{S_2O_7^{2-}}, S2O32−\mathrm{S_2O_3^{2-}}
  2. 2S4O62−\mathrm{S_4O_6^{2-}}, S2O32−\mathrm{S_2O_3^{2-}}Official answer
  3. 3S2O72−\mathrm{S_2O_7^{2-}}, S2O82−\mathrm{S_2O_8^{2-}}
  4. 4S4O62−\mathrm{S_4O_6^{2-}}, S2O72−\mathrm{S_2O_7^{2-}}

Official answer: option 2 · CBSE official answer key

Same idea

The only question on Structures of Sulphur Oxoanions

No other NEET paper from 2017–2026 tested this exact idea.

Structures of Sulphur Oxoanions: 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

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

0363’171’185’192’203’212’222’232’242’251’26