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Saturday, 31 October

JEE Main 2026 · ChemistryMultiple choiceOtherHardRecall

JEE Main 4 April 2026, Shift 1, Chemistry Q60

Question 60 of 75 in this shift, Chemistry question 10 of 25, Section A.

The correct statements among the following are, A. Mo(VI) and W(VI) are less stable than Cr(VI). B. Ce4+\mathrm{Ce^{4+}} and Tb4+\mathrm{Tb^{4+}} are oxidant while Eu2+\mathrm{Eu^{2+}} and Yb2+\mathrm{Yb^{2+}} are reductant. C. Cm and Am have seven unpaired electrons. D. Actinoid contraction is greater from element to element than lanthanoid contraction. Choose the correct answer from the options given below:
  1. (1)A and B Only
  2. (2)C and D Only
  3. (3)B and D OnlyOfficial answer
  4. (4)A and C Only

Official answer

Option 3

NTA final key.

Chapter
The d- and f-Block Elements
Topic
f-Block Elements
Idea tested
Cerium(IV) as an Oxidizing Agent

Same idea in other shifts

Asked 4× in all
  1. 25 Jun 2022, Shift 1 · Q68Cerium (IV) has a noble gas configuration. Which of the following is **correct** statement about it ?EasySingle correct
  2. 3 Aug 2021, Shift 2 · Q39Which one of the following statements is correct?MediumSingle correct
  3. 25 Feb 2021, Shift 1 · Q38Given below are two statements : Statement I : CeO2\mathrm{CeO_2} can be used for oxidation of aldehydes and ketones. Statement II : Aqueous…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.