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Environmental I...

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    Multiple Choice Questions
    BOD in river water

  • Question 2
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    The enhanced growth of water hyacinth in lakes can be due to

  • Question 3
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    How are the wild animals affected by cutting of forest?

  • Question 4
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    Ozone layer depletion may lead to which of the following harmful effects in organisms?

  • Question 5
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    Which harmful radiations are absorbed by ozen layer?

  • Question 6
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    The maximum hole of ozone is found over ______

  • Question 7
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    The bio accumulation of pesticides in birds leads to

  • Question 8
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    Wastes may be sealed in concrete-filled drums and discharged to a depth of about 500 m. This specific statement is true for 

  • Question 9
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    BOD of lake becomes high by :-

  • Question 10
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    Why ozone is known as 'chemical weed ' ?

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