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Question

Which of the following statements about control of particulate pollution is not correct?


A

Grravity setting chamber removes larger particles from the air

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B

Cyclone collector removes fine particles in the diameter range 5-20 m

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C

wet scrubbers are used to wash away all types of particulars

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D

In electrostatic precipitator, the particulates are made to acquire positive charge which then attracted by negative electrode and removed.

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Solution

The correct option is

D

In electrostatic precipitator, the particulates are made to acquire positive charge which then attracted by negative electrode and removed.


Particulates acquire a negative charge and are attracted by the positive electrode


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