- 1. Environmental chemistry is the scientific study of the chemical and biochemical phenomena that occur in the environment. It involves understanding the sources, reactions, transport, effects, and fates of chemical species in air, water, soil, and living organisms. Environmental chemists strive to identify and quantify pollutants, develop ways to prevent or remediate environmental contamination, and assess the risks posed by various chemicals to human health and ecosystems. By studying the complex interactions between chemicals and the environment, environmental chemistry plays a crucial role in promoting sustainable practices and protecting the health of our planet.
What causes ocean acidification?
A) Oil spills
B) Plastic pollution
C) Excessive fishing
D) Absorption of carbon dioxide
- 2. What is the major greenhouse gas produced by agriculture?
A) Ozone
B) Sulfur dioxide
C) Carbon monoxide
D) Methane
- 3. Which chemical is responsible for the depletion of the ozone layer?
A) Lead
B) Chlorofluorocarbons (CFCs)
C) Sulfur dioxide
D) Hydrogen peroxide
- 4. How do endocrine-disrupting chemicals affect ecosystems?
A) They strengthen predator-prey relationships
B) They improve nutrient cycling
C) They enhance growth of plants
D) They interfere with hormonal systems of organisms
- 5. What is eutrophication?
A) Excessive nutrients causing algal blooms and oxygen depletion in water bodies
B) Overfishing
C) Climate change
D) Civil unrest in coastal regions
- 6. What role do wetlands play in environmental chemistry?
A) Producing greenhouse gases
B) Accelerating soil erosion
C) Decreasing biodiversity
D) Natural filters for pollutants and carbon sequestration
- 7. Which heavy metal is a common pollutant due to activities like mining and smelting?
A) Zinc
B) Copper
C) Lead
D) Aluminum
- 8. How do nitrogen oxides contribute to air pollution?
A) By promoting marine life
B) By forming smog and acid rain
C) By reducing ozone formation
D) By preventing greenhouse effect
- 9. How does acid rain form?
A) Due to volcanic eruptions
B) When sulfur dioxide and nitrogen oxides react with water vapor in the atmosphere
C) By industrial noise pollution
D) From excessive sunlight exposure
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