Practice test

Pollution - Test Set 1

Review 20 exam-focused questions with detailed explanations, then start the interactive test when you are ready.

20 questions

Questions and explanations

  1. Question 1

    Which specics of chromium in toxic in water?
    1. Cr+2
    2. Cr+3
    3. Cr+6
    4. Cr0
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  2. Question 2

    Air pollutant causing leaf curling is
    1. SO2
    2. O3
    3. H2 S
    4. CO
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  3. Question 3

    BOD is related to
    1. detergents
    2. putrescibility
    3. inorganic pollutants
    4. organic pollutants
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  4. Question 4

    OH radicals in atmosphere play a role of
    1. Scavenger
    2. Acidification
    3. Reducing agent
    4. Greenhouse
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  5. Question 5

    Which pollution causes Jaundice?
    1. Water
    2. Air
    3. Land
    4. Thermal
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  6. Question 6

    Activated sludge is associated with management of weast and it is a kind of
    1. Chemical treatment
    2. Mechanical means
    3. Biological treatment
    4. Nuclear means
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  7. Question 7

    Overgrazing causes
    1. Negative pollution
    2. Positive pollution
    3. Soil erosion
    4. Reduction in crop yield
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  8. Question 8

    MNP (Most Probable Number) indicates
    1. Thermal pollution
    2. Air pollution
    3. Noise pollution
    4. water pollution
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  9. Question 9

    Most abundant pollutant in the atmosphere among hydrocarbon is
    1. methane
    2. propane
    3. butane
    4. bezypyrene
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  10. Question 10

    E. Coli is used as an indicator organism to determine pollution of water with
    1. pollen of aquatic plants
    2. Bioremediation
    3. Bio-augmentation
    4. None of the above
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  11. Question 11

    Photochemical smog is related to pollution of
    1. Air
    2. Water
    3. Soil
    4. nostoc
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  12. Question 12

    The widely-used aerobic suspension type of liquid waste treatment system is
    1. Rotating Biological Contractor
    2. Percolating filter
    3. Activated sludge process
    4. Septic tank
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  13. Question 13

    National Ambient Air Quality Standards for major pollutants were notified by CPCB in
    1. 1994
    2. 1984
    3. 2004
    4. 1974
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  14. Question 14

    Which secondary pollutant is produced by UV rays of sun lights?
    1. SO2
    2. CO
    3. Fluorides
    4. O3
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  15. Question 15

    The treatment designed to remove nonbiodegradable organic pollutants and mineral nutrients from waste water is
    1. Lagoons
    2. Imhoff tank
    3. Secondary treatment
    4. Tertiary treatment
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  16. Question 16

    Noise pollution is measured using sound meter and the unit is
    1. Hertz
    2. Decibel
    3. Joule
    4. Sonogram
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  17. Question 17

    Which one among the following is a thermosetting plastic?
    1. PVC
    2. PVA
    3. Bakelite
    4. None of the above
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  18. Question 18

    Process in which chlorine is added to water to kill any remaining bacteria is called
    1. Sedimentation
    2. Coagulation
    3. Filtration
    4. Chlorination
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  19. Question 19

    Tetracthyl lead was coming out from
    1. Hospital waste
    2. Exhaust of automobile
    3. Waste dumping
    4. Open dumping
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  20. Question 20

    In an area DDT had been used extensively, the population of birds declined significantly because
    1. smakes were feeding exclusively on birds
    2. Many of birds eggs laid, did not hatch
    3. birds stopped laying eggs
    4. earthworms in the area got cradicated
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