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Which of the following can be used for controlling gaseous pollutant?
Arrestor
Incineration
Absorption
None of above
Absorption technique is used for controlling gaseous pollutant. These pollutants are brought into contact with a liquid such as water. The liquid absorbs the gas. Incineration is a process of waste treatment that employs combustion of the organic substances comprised in the waste materials. An arrestor is meant for protection of insulators and conducters of a system from the effects of lightning. Hence option 3rd is correct.
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