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Environment iss...

TIME LEFT - 09:59 MIN
  • Question 1
    1 / -0

    Coagulation and flocculation during water treatment procedure is done to remove

    a. microorganisms
    b. calcium
    c. suspended fine particles
    d. magnesium
    e. odour

  • Question 2
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    In atmosphere, CFCs gets accumulated in the

  • Question 3
    1 / -0

    A major source of phosgene pollution in the air comes from

  • Question 4
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    Acids produced by microorganisms are used to solubilise desired metals in the process of

  • Question 5
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    SO2 in air can cause which of the following in plants?

    a. Necrosis
    b. Bleaching
    c. Growth retardation
    d. Yellowing

  • Question 6
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    Air pollutants which breakdown RBCs in the blood and damage kidneys are

  • Question 7
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    In the atmosphere, the maximum amount of contribution to CO2 is given by

  • Question 8
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    Bleaching substances, chlorates and organic matter (like lignin) are major water pollutants generated by

  • Question 9
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    Assertion: There is a decrease in the bird population in an area where DDT is used.
    Reason: DDT increases calcium absorption, causing calcification in birds.

  • Question 10
    1 / -0

    In the process of Eutrophication, BOD increases due to

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