JEE Main 2025 · ChemistryMultiple choiceSingle correctMediumMulti-step

JEE Main 7 April 2025, Shift 1, Chemistry Q60

Question 60 of 75 in this shift, Chemistry question 10 of 25, Section A.

The group 14 elements A and B have the first ionisation enthalpy values of 708 and 715 kJ

\mathrm{mol^{-1}}

respectively. The above values are lowest among their group members. The nature of their ions

\mathrm{A^{2+}}

and

\mathrm{B^{4+}}

respectively is

(1)reducing and oxidisingOfficial answer
(2)oxidising and reducing
(3)both reducing
(4)both oxidising

Official answer

Option 1

NTA final key.

Chapter: The p-Block Elements
Topic: Group 13 & 14
Idea tested: Inert Pair Effect

Same idea in other shifts

Asked 5× in all

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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.