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Environmental Issues

NEET Biology • 10 questions • Free on ExamBattle

Practice Questions

  1. Q1

    The Montreal Protocol (1987) was signed to reduce:

    • A. Carbon dioxide emissions
    • B. Ozone-depleting substances (CFCs)
    • C. Nuclear waste
    • D. Ocean pollution
  2. Q2

    Eutrophication of water bodies is caused by excessive levels of:

    • A. Heavy metals
    • B. Nutrients (nitrogen and phosphorus)
    • C. Dissolved oxygen
    • D. pH changes
  3. Q3

    The concept of "biomagnification" refers to:

    • A. Microorganisms multiplying in soil
    • B. Increase in concentration of pollutants at each trophic level
    • C. Magnification of genetic material
    • D. Growth of organisms due to pollution
  4. Q4

    Which gas is primarily responsible for acid rain?

    • A. CO₂ only
    • B. SO₂ and NOₓ
    • C. Ozone (O₃)
    • D. Methane (CH₄)
  5. Q5

    Minamata disease in Japan was caused by:

    • A. Lead poisoning
    • B. Mercury poisoning from industrial effluent
    • C. Cadmium poisoning
    • D. Arsenic poisoning
  6. Q6

    The main cause of depletion of the ozone layer is:

    • A. CO₂ emissions
    • B. Chlorofluorocarbons (CFCs)
    • C. Nitrogen oxides only
    • D. UV radiation directly

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