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Question

Scrubber removes gases such as

A
carbon monoxide
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B
nitric oxide
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C
ozone
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D
sulphur dioxide
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Solution

The correct option is D sulphur dioxide
Scrubbers are air pollution control devices that use liquid to remove particulate matter or gases from an industrial exhaust or flue gas stream. Often these pollutants are chemicals such as ammonia, chlorine or sulfur compounds. In a scrubber, the exhaust is passed through a spray of water or lime which dissolves the pollutant and the clean air is released into the environment.

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