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Question

The electrostatic precipitator is used for removing particulate matter from

A
exhaust of a thermal power plant
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B
exhaust from automobiles
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C
industrial effluents
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D
kitchen waste
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Solution

The correct option is A exhaust of a thermal power plant
The electrostatic precipitator removes over 99% of particulate matter present in the exhaust from a thermal power plant. It has electrode wires that are maintained at several thousand volts, which produce a corona of electrons. These electrons attach to dust particles giving them a net negative charge. The collecting plates are grounded and attract the charged dust particles.

The methods used to reduce pollution for other pollutants:
Exhaust from automobiles - catalytic converters
Industrial effluents - Waste water treatment
Kitchen waste - Composting

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