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Environmental I...

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  • Question 1
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    Ozone protects biosphere from high energy

  • Question 2
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    BOD (biological oxygen demand) is

  • Question 3
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    Drinking mineral water drink with low levels ($$\sim$$ 0.02 ppm) of pesticide for long period would

  • Question 4
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    Chlorofluorocarbon releases a chemical harmful to ozone

  • Question 5
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    Ozone hole enhances

  • Question 6
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    In the recent years, there has been an increasing incidence of floods in the plains of northern India, because

  • Question 7
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    In the environment, ozone is known for its 

  • Question 8
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    In which one of the following the BOD (biochemical oxygen demand) of sewage (s), distillery effluent (DE), paper mill effluent (PE) and sugar mill effluent (SE) have been arranged in ascending order?

  • Question 9
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    CFCs used in refrigerators cause 

  • Question 10
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    When PO$$_4$$ and NO$$_3$$ is more in the water of a lake it causes

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