If 1 Nm³ of oxygen contains 'N' molecules, how many molecules are present in 2 Nm³ of sulfur dioxide (SO₂)?

CHEMICAL ENGINEERING MCQs for PPSC, FPSC, NTS, and Pakistan government job tests. Select an option below, then read the explanation.

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Subject
CHEMICAL ENGINEERINGchemical-engineering
Published
12 Mar 2019
Last updated
28 May 2026

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Explanation

Since 1 normal cubic meter (Nm³) of any ideal gas contains the same number of molecules under identical conditions, 2 Nm³ of SO₂ will also contain the same number of molecules as 1 Nm³ of O₂, which is N.

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