JEE Main 2026 · ChemistryMultiple choiceSingle correctMediumMulti-step

JEE Main 2 April 2026, Shift 2, Chemistry Q70

Question 70 of 75 in this shift, Chemistry question 20 of 25, Section A.

Among Fe

^{2+}

, Fe

^{3+}

, Cr

^{2+}

and Zn

^{2+}

, the ion that shows positive borax bead test and with highest ionisation enthalpy is:

(1)Fe $^{2+}$
(2)Zn $^{2+}$
(3)Cr $^{2+}$
(4)Fe $^{3+}$ Official answer

Official answer

Option 4

NTA final key.

Chapter: The d- and f-Block Elements
Topic: Group 13 & 14
Idea tested: Borax Bead Test Chemistry

Same topic in other shifts

All Group 13 & 14 questions

4 Apr 2026, Shift 2 · Q58The electronegativity of a group 13 element 'E' is same as that of Ge (on Pauling scale and upto one decimal point). The CORRECT…HardOther
6 Apr 2026, Shift 1 · Q59Given below are two statements: Statement I: Aluminium is more electropositive than thallium as the standard electrode potential value of…MediumTwo statements
3 Apr 2025, Shift 2 · Q60The correct orders among the following are A. Atomic radius : B < Al < Ga < In < Tl B. Electronegativity : Al < Ga < In < Tl < B C.…MediumOther
4 Apr 2025, Shift 2 · Q57The elements of Group 13 with highest and lowest first ionisation enthalpies are respectively :EasySingle correct
4 Apr 2025, Shift 2 · Q58Given below are two statements : Statement (I) : The first ionisation enthalpy of group 14 elements is higher than the corresponding…MediumTwo statements
7 Apr 2025, Shift 1 · Q60The group 14 elements A and B have the first ionisation enthalpy values of 708 and 715 kJ $\mathrm{mol^{-1}}$ respectively. The above…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.