Multiple choice

Which of the following statements about control of particular pollution is/are not correct?

  1. Gravity settling chamber removes larger particles from the air.
  2. In electrostatic precipitator, the particulates acquire positive change, they are then attracted by the negative electrodes and removed.
  3. Cyclone collector removes fine particles in the diameter range 5-20 micron.
  4. Wet scrubbers are used to wash away all types of particulates.

  1. 1 and 2

  2. 1 and 3

  3. 2 only

  4. 4 only

  5. 2 and 4
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This option is correct because particulates acquire negative charge and are attracted by the positive electrodes.

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