Equal masses of SO 2 and O 2 are placed in a flask at STP c…

Chemistry Some Basic Concepts of Chemistry The Mole Concept Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 13, 2026

Equal masses of SO 2 and O 2 are placed in a flask at STP choose the correct statement.

The number of molecules of O 2 are more than SO 2

Volume occupied at STP is more for O 2 than SO 2

The ratio of number of atoms of SO 2 and O 2 is 3 : 4.

Moles of SO 2 is greater than the moles of O 2 .

Text Solution

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The correct answer is:

GO FOR SOLUTION

(a,b,c)

Let W gas of SO 2 and O 2 are taken

moles of SO 2 = ; moles of O 2 =

molecules of O 2 = ; molecules of SO 2 =

hence molecules of O 2 > molecules of SO 2

since moles of O 2 > moles of SO 2 , hence volume of O 2 at STP > volume of SO 2 at STP.

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