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

A concentration of 4 ppm or more of SO2 in air is known to produce a pungent smell.

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