JEE Main 2025 · ChemistryMultiple choiceSingle correctMediumMulti-step

JEE Main 7 April 2025, Shift 1, Chemistry Q61

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

The first transition series metal 'M' has the highest enthalpy of atomisation in its series. One of its aquated ion (

\mathrm{M^{n+}}

) exists in green colour. The nature of the oxide formed by the above

\mathrm{M^{n+}}

ion is:

(1)basicOfficial answer
(2)acidic
(3)amphoteric
(4)neutral

Official answer

Option 1

NTA final key.

Chapter: The d- and f-Block Elements
Topic: d-Block Elements
Idea tested: Acid-Base Character of Oxides

Same idea in other shifts

Asked 8× in all

4 Apr 2025, Shift 2 · Q59'X' is the number of electrons in $\mathrm{t_{2g}}$ orbitals of the most stable complex ion among $\mathrm{[Fe(NH_3)_6]^{3+}}$ ,…MediumSingle correct
7 Apr 2025, Shift 2 · Q61'X' is the number of acidic oxides among $\mathrm{VO_2}$ , $\mathrm{V_2O_3}$ , $\mathrm{CrO_3}$ , $\mathrm{V_2O_5}$ and $\mathrm{Mn_2O_7}$ .…MediumSingle correct
4 Apr 2024, Shift 2 · Q86A first row transition metal with highest enthalpy of atomisation, upon reaction with oxygen at high temperature forms oxides of formula…MediumNumerical value
31 Jan 2024, Shift 2 · Q69Choose the correct statements from the following A. $\mathrm{Mn_2O_7}$ is an oil at room temperature B. $\mathrm{V_2O_4}$ reacts with acid…MediumOther
27 Aug 2021, Shift 1 · Q40The nature of oxides $\mathrm{V_2O_3}$ and CrO is indexed as ‘X’ and ‘Y’ type respectively. The correct set of X and Y is :EasySingle correct
24 Feb 2021, Shift 2 · Q38The $\textbf{incorrect}$ statement among the following is :MediumSingle correct
2 Apr 2017 (offline) · Q47In the following reactions, ZnO is respectively acting as a/an : (a) $\mathrm{ZnO+Na_2O\rightarrow Na_2ZnO_2}$ (b)…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.