Explanation:

A scrubber is a device which absorbs pollutants.The impact of acid rain can be reduced by checking the root cause for acid rain .A scrubber used to remove sulphur dioxide from smock stack usually consists of water spray ad gas rising from the stack .which is passed through the scrubber when water absorbs sulphur dioxide.

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Answer:-

Scrubbers help to remove most of the sulfur oxides from the smoke stack exhaust of a power plant. . Then it enters a scrubber. In the scrubber, there is a water spray that produces a cloud of fine water droplets. The water is mixed with crushed limestone, which reacts with the sulfur and pulls it out of the exhaust.