Asked in PPSC, FPSC and other one-paper exams (compiled from unofficial resources).
Everyday & Industrial ChemistryGases in Everyday Life
The least polluted gas is ?
- A.Nitrogen dioxide
- B.Carbon dioxide
- C.Sulfur dioxide
- D.ChlorineCorrect answer
Timed quizzes, instant results, track your progress — free
Practice these MCQs in the appQuick fact: The least polluted gas among common gases is Chlorine, as it is a pure elemental gas and does not contain mixed pollutants.