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Silencers is used for minimising ...................?

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The major air pollutant is .........................?

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Which of the following is major sink of carbon monoxide?

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Oxides of sulphur and nitrogen are important pollutants of ..................

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Which of the following reacts with haemoglobin of blood and produce toxic effect?

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Most hazardous metal pollytant of automobile exhaust is .............?

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CFC is related to pollution of ____________?

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Pyrolysis is_______________.

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Asbestosis is the disease which affect _______________?

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Environment friendly chemistry is otherwise is known as .............................?

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