Wet and dry scrubbers are air pollution control devices that remove what from industrial exhaust?

• A. Ozone and methane
• B. Oxygen
• C. Harmful particulates and/or gases
• D. Water vapor

Answer: (C)

Wet and dry scrubbers clean industrial exhaust by removing pollutants from the gas stream. They do this by bringing the exhaust into contact with a cleaning medium: wet scrubbers use a liquid to absorb or react with gas-phase pollutants and to capture particulates, while dry scrubbers use dry reagents or filters to trap particles and neutralize gases. This means their job is to remove harmful particulates and/or gases, not just moisture, oxygen, or other non-pollutant components. So the best answer is that they remove harmful particulates and/or gases from the exhaust.