Pollution Control

Q. <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Which of the following is not used for controlling air pollution?

1. Silencer
2. Scrubber
3. Fabric filter
4. Electrostatic precipitator

Q. <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Identify the methods used in the primary treatment of water from the following:

1. Screening
2. Sedimentation
3. Flocculation
4. Bioremediation

Q. <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Which of the following methods are used for the primary treatment of water ?

1. Screening
2. Sedimentation
3. Flocculation
4. Bioremediation