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- Smog is :
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- Sound becomes a hazardous noise pollution it its level is above :
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- Pollutants discharged by jet planes are :
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- A gas produced by paddy field and connected with golbal warming is :
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- Which of the following is not a pollutant ?
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- Carbon monoxide kills because it destroys:
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- NEERI IS:
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- What is BOD ?
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- Automobile exhaust gas that causes major respiratory problem is :
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