JEE Main - Previous Year Papers JEE MAIN 2025 JEE Mains 07 April 2025 Paper Shift -1 Single Correct MCQ
Published on: August 14, 2026

At the sea level, the dry air mass percentage composition is given as nitrogen gas :

70.0, oxygen gas : 27.0 and argon gas : 3.0. If total pressure is 1.15 atm , then calculate the ratio of followings respectively :
(i) partial pressure of nitrogen gas to partial pressure of oxygen gas
(ii) partial pressure of oxygen gas to partial pressure of argon gas
(Given : Molar mass of N, O and Ar are 14, 16, and respectively)

A
B

C
D

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The correct answer is:
D

{using Dalton's law of partial pressure }

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