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Saturday, 31 October

JEE Main 2026 · ChemistryMultiple choiceOtherMediumRecall

JEE Main 4 April 2026, Shift 1, Chemistry Q61

Question 61 of 75 in this shift, Chemistry question 11 of 25, Section A.

Correct statements from the following are A. Potassium dichromate is an oxidising agent and it oxidises FeSO4\mathrm{FeSO_4} to Fe2(SO4)3\mathrm{Fe_2(SO_4)_3} in acidic medium. B. Sodium dichromate can be used as primary standard in volumetric estimation. C. CrO42−\mathrm{CrO_4^{2-}} and Cr2O72−\mathrm{Cr_2O_7^{2-}} are interconvertible in aqueous solution by varying the pH of the solution. D. Cr-O-Cr bond angle in Cr2O72−\mathrm{Cr_2O_7^{2-}} is 126∘126^\circ. Choose the correct answer from the options given below:
  1. (1)A, B and C Only
  2. (2)A, C and D OnlyOfficial answer
  3. (3)A and C Only
  4. (4)B and D Only

Official answer

Option 2

NTA final key.

Chapter
The d- and f-Block Elements
Topic
d-Block Elements
Idea tested
Dichromate Reactions

Same idea in other shifts

Asked 3× in all
  1. 8 Apr 2024, Shift 2 · Q68The equilibrium Cr2O72−⇌2CrO42−\mathrm{Cr_2O_7^{2-} \rightleftharpoons 2CrO_4^{2-}} is shifted to the right in :EasySingle correct
  2. 3 Aug 2021, Shift 2 · Q31Given below are two statements : Statement I : In dichromate ion, all the Cr—O bonds are of equal length. Statement II : In dichromate…MediumTwo statements

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.