Home Biology Ecosystem Previous Year Questions A scrubber in the exhaust of a chemical indu…
Biology Ecosystem Previous Year Questions Single Correct MCQ
Published on: August 20, 2026

A scrubber in the exhaust of a chemical industrial plant removes :-

A
gases like sulphur dioxide
B
particulate matter of the size 5 micrometer or above
C
gases like ozone and methane
D
particulate matter of the size 2.5 micrometer or less

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Text Solution

Verified by Experts
The correct answer is:
A

A scrubber is a specialized device used to clean industrial exhaust by spraying it with water or a lime slurry to neutralize acidic gases. It is primarily designed to remove sulphur dioxide ( SO 2 ), as the gas reacts with the liquid spray and is removed from the air stream.

While other devices like electrostatic precipitators handle particulate matter, scrubbers are the standard solution for chemical gas pollutants.

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