JEE Main 2024 · ChemistryMultiple choiceSingle correctEasyRecall

JEE Main 4 April 2024, Shift 1, Chemistry Q69

Question 69 of 90 in this shift, Chemistry question 9 of 30, Section A.

The element which shows only one oxidation state other than its elemental form is :

(1)Cobalt
(2)ScandiumOfficial answer
(3)Titanium
(4)Nickel

Official answer

Option 2

NTA final key.

Chapter: The d- and f-Block Elements
Topic: d-Block Elements
Idea tested: Oxidation State Trends

Same idea in other shifts

Asked 8× in all

3 Apr 2025, Shift 2 · Q61Given below are two statements: Statement I : $\mathrm{CrO_3}$ is a stronger oxidizing agent than $\mathrm{MoO_3}$ Statement II : Cr(VI)…MediumTwo statements
5 Apr 2024, Shift 1 · Q69The metal that shows highest and maximum number of oxidation state is :EasySingle correct
9 Apr 2024, Shift 2 · Q69Give below are two statements : Statement I : The higher oxidation states are more stable down the group among transition elements unlike…MediumTwo statements
1 Feb 2024, Shift 2 · Q69Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : In aqueous…MediumAssertion–reason
8 Apr 2023, Shift 2 · Q89The sum of oxidation state of the metals in $\mathrm{Fe(CO)_5}$ , $\mathrm{VO^{2+}}$ and $\mathrm{WO_3}$ is ____________.EasyNumerical value
25 Jul 2021, Shift 1 · Q38The correct order of following 3d metal oxides, according to their oxidation numbers is : (a) $\mathrm{CrO_3}$ (b) $\mathrm{Fe_2O_3}$ (c)…EasyOther
17 Mar 2021, Shift 2 · Q39The common positive oxidation states for an element with atomic number 24, are :EasySingle 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.