JEE Main 2021 · ChemistryMultiple choiceSingle correctMediumRecall

JEE Main 3 August 2021, Shift 1, Chemistry Q33

Question 33 of 90 in this shift, Chemistry question 3 of 30, Section A.

The correct order of second ionization enthalpy is

(1)V > Cr > Mn > Fe
(2)Fe > Mn > Cr > V
(3)Cr > Fe > Mn > VOfficial answer
(4)Fe > Cr > Mn > V

Official answer

Option 3

NTA final key.

Chapter: The d- and f-Block Elements
Topic: d-Block Elements
Idea tested: Ionization Enthalpy Irregularities

Same idea in other shifts

Asked 4× in all

6 Apr 2026, Shift 2 · Q60The correct order of first ( $\Delta_iH_1$ ) and second ( $\Delta_iH_2$ ) ionisation enthalpy values of Cr and Mn are : A. $\Delta_iH_1$ : Cr…MediumOther
9 Apr 2024, Shift 2 · Q86A transition metal 'M' among Sc, Ti, V, Cr, Mn and Fe has the highest second ionisation enthalpy. The spin-only magnetic moment value of…MediumNumerical value
8 Jan 2020, Shift 1 · Q36The third ionization enthalpy is minimum for :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 108 of the 174 JEE Main shifts held from 2017 to 2026.