Correct option is C
Wet collectors, or scrubbers, are devices designed specifically to remove gaseous pollutants from industrial exhaust streams. They work by bringing the polluted gas stream into contact with a liquid, usually water or a water-based solution, which absorbs the gaseous pollutants. Depending on the specific design and the pollutants being targeted, various types of scrubbers exist, including:
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Spray towers
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Venturi scrubbers
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Packed bed scrubbers
These systems are particularly effective at removing acidic gases (like sulfur dioxide or hydrogen chloride), ammonia, and volatile organic compounds (VOCs).
