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