JEE Main 2025 · ChemistryMultiple choiceSingle correctEasyApplication

JEE Main 3 April 2025, Shift 1, Chemistry Q51

Question 51 of 75 in this shift, Chemistry question 1 of 25, Section A.

Among

10^{-9}

g (each) of the following elements, which one will have the highest number of atoms? Element: Pb, Po, Pr and Pt

(1)Pb
(2)Po
(3)PrOfficial answer
(4)Pt

Official answer

Option 3

NTA final key.

Chapter: Some Basic Concepts of Chemistry
Topic: Mole Concept
Idea tested: Mole and Avogadro Calculations

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.