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JEE Main 2026 · ChemistryMultiple choiceSingle correctEasyCalculation

JEE Main 4 April 2026, Shift 1, Chemistry Q51

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

Number of moles and number of molecules in

1.4187

L of

\mathrm{SO_2}

at STP respectively are

(1) $0.1266;\ 3.812\times10^{22}$
(2) $0.0633;\ 3.812\times10^{22}$ Official answer
(3) $0.1266;\ 7.6238\times10^{22}$
(4) $0.0633;\ 7.6238\times10^{22}$

Official answer

Option 2

NTA final key.

Chapter: Some Basic Concepts of Chemistry
Topic: Mole Concept
Idea tested: Molar Mass and Gas Volume

Same idea in other shifts

Asked 2× in all

2 Apr 2017 (offline) · Q321 gram of a carbonate ( $\mathrm{M_2CO_3}$ ) on treatment with excess HCl produces 0.01186 mole of $\mathrm{CO_2}$ . The molar mass of…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 42 of the 174 JEE Main shifts held from 2017 to 2026.