Electrostatic precipitators can remove upto 90% of from industrial waste gases.
A
particulate matter
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B
cadmium
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C
mine tailing
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Solution
The correct option is A particulate matter Electrostatic precipitator is a device that uses electric charge to remove certain impurities from the air. Almost 90% of dust particles are removed from the polluted air when they pass through the electrostatic precipitators. The dirty air containing particulates is passed through electrically charged plates. The particles may be naturally electrically charged and as they pass through electrically charged plates of the precipitators they get collected on the plates carrying opposite charge and clean gas passes out.