When the concentration of SO2 in air is greater than ____... — Answer & Explanation | PrepBeePakistan

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HomeMCQsChemical Engineering

MEDIUMENGLISHChemical Engineering

When the concentration of SO2 in air is greater than ______________ ppm, it gives a pungent smell?

Correct answer: D

Explanation

SO2 gas has a pungent smell when its concentration reaches levels around 4 ppm.

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