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- Which one of the following is not a bioindicator of water pollution?
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- Increase of BDO in water leads to :
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- Freon gas causing stratospheric O2depletion is mainly releases from :
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- Mercury pollution causes
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- Which of the following sewage treatment removes suspended solids?
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- A lake near a village suffered heavy mortality of fishes within a few ...
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- Which one of the following paris of gases are the major cause of "Gree...
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- Eutrophication is often seen in:
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- Depletion of which gas in the atmosphere can lead to an increased inci...
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- In an area where DDT had been used extensively, the population of bird...
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- Kyoto Protocal was endorsed at :
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- Ozone layer is present in :
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- A location with luxuriant growth of lichens on the trees indicates tha...
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- A scrubber in the exhaust of a chemical industrial plant removes :
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- Which toxic gas responsible for Bhopal gas tragedy ?
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- Which greeen house gas relased from the paddy field ?
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- Which toxic gas is present in the exhaust of automobiles ?
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- Name the biggest source of pollution a big cities.
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- Give two examples of secondary pollutants ?
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- Which pollutant of Mathura refinery threat to Tajmahal ?
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