- 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) Plastic pollution
B) Excessive fishing
C) Oil spills
D) Absorption of carbon dioxide
- 2. What is the major greenhouse gas produced by agriculture?
A) Methane
B) Sulfur dioxide
C) Ozone
D) Carbon monoxide
- 3. Which chemical is responsible for the depletion of the ozone layer?
A) Sulfur dioxide
B) Hydrogen peroxide
C) Chlorofluorocarbons (CFCs)
D) Lead
- 4. How does acid rain form?
A) From excessive sunlight exposure
B) Due to volcanic eruptions
C) By industrial noise pollution
D) When sulfur dioxide and nitrogen oxides react with water vapor in the atmosphere
- 5. How do endocrine-disrupting chemicals affect ecosystems?
A) They interfere with hormonal systems of organisms
B) They improve nutrient cycling
C) They enhance growth of plants
D) They strengthen predator-prey relationships
- 6. What is eutrophication?
A) Climate change
B) Overfishing
C) Excessive nutrients causing algal blooms and oxygen depletion in water bodies
D) Civil unrest in coastal regions
- 7. Which heavy metal is a common pollutant due to activities like mining and smelting?
A) Copper
B) Aluminum
C) Lead
D) Zinc
- 8. How do nitrogen oxides contribute to air pollution?
A) By forming smog and acid rain
B) By preventing greenhouse effect
C) By reducing ozone formation
D) By promoting marine life
- 9. What role do wetlands play in environmental chemistry?
A) Natural filters for pollutants and carbon sequestration
B) Accelerating soil erosion
C) Producing greenhouse gases
D) Decreasing biodiversity
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