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Start JEE / NEET / Foundation preparation at rupees 99/day !!
21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!
An Intiative by Sri Chaitanya
a
The collecting plates are grounded, so that they repel charged dust particles.
b
It has electrode wires that are maintained at 100 millivolts.
c
It removes over 99 per cent particulate matter present in the exhaust.
d
Protons produced by corona attach to dust particles, giving them a net negative charge.
answer is C.
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