JEE Main Chemistry question

Not in JEE Main or NEET syllabus

The Cottrell precipitator is used to:

(A)Neutralize the charge on carbon particles in the air (smoke)
(B)Coagulate carbon particles of smoke
(C)Bring about cataphoresis in carbon particles
(D)All of the aboveCorrect

Answer: (D)

Solution

In the Cottrell precipitator, smoke is passed between highly charged electrodes; the negatively charged carbon particles migrate towards the electrode (cataphoresis), where their charge is

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Question ID VK-145144