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Which of the following force is utilised in reducing air pollution by removing dust, soot and fly-ash particles from the smoke coming out of chimneys of factories ? (a) magnetic force (b) gravitational force (c) electostatic force (d) frictional force |
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Answer» Which of the following force is utilised in reducing air pollution by removing dust, soot and fly-ash particles from the smoke coming out of chimneys of factories ? |
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