JEE Main 2023 · ChemistryMultiple choiceSingle correctMediumConceptual

JEE Main 6 April 2023, Shift 1, Chemistry Q70

Question 70 of 90 in this shift, Chemistry question 10 of 30, Section A.

Strong reducing and oxidizing agents among the following, respectively, are

(1) $\mathrm{Ce^{4+}}$ and $\mathrm{Eu^{2+}}$
(2) $\mathrm{Eu^{2+}}$ and $\mathrm{Ce^{4+}}$ Official answer
(3) $\mathrm{Ce^{3+}}$ and $\mathrm{Ce^{4+}}$
(4) $\mathrm{Ce^{4+}}$ and $\mathrm{Tb^{4+}}$

Official answer

Option 2

NTA final key.

Chapter: The d- and f-Block Elements
Topic: f-Block Elements
Idea tested: Europium(II) and Ytterbium(II) as Reducing Agents

Same topic in other shifts

All f-Block Elements questions

4 Apr 2026, Shift 1 · Q60The correct statements among the following are, A. Mo(VI) and W(VI) are less stable than Cr(VI). B. $\mathrm{Ce^{4+}}$ and…HardOther
4 Apr 2026, Shift 2 · Q59Pairs of elements with the same number of electrons in their respective 4f orbital are [Atomic number: Eu-63, Gd-64, Dy-66, Ho-67, Tm-69,…MediumOther
9 Apr 2024, Shift 1 · Q87Number of colourless lanthanoid ions among the following is ________. $\mathrm{Eu^{3+}, Lu^{3+}, Nd^{3+}, La^{3+}, Sm^{3+}}$ MediumNumerical value
3 Aug 2021, Shift 2 · Q33The correct order of the basic character for the following metal hydroxides isMediumSingle correct
3 Aug 2021, Shift 2 · Q39Which one of the following statements is correct?MediumSingle correct
16 Mar 2021, Shift 2 · Q38Arrange the following metal complex/compounds in the increasing order of spin only magnetic moment. Presume all the three, high spin…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 42 of the 174 JEE Main shifts held from 2017 to 2026.