AP ECET CHEMISTRY Multiple Choice Questions (MCQs)
AP ECET Chemistry - Environmental Chemistry MCQs
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Which of the following terms refers to the layer of the Earth where living organisms exist?
- a) Lithosphere
- b) Hydrosphere
- c) Atmosphere
- d) Biosphere
Answer: d) Biosphere
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Which component of the environment includes all water bodies such as oceans, rivers, and lakes?
- a) Lithosphere
- b) Hydrosphere
- c) Atmosphere
- d) Biosphere
Answer: b) Hydrosphere
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What does the term "particulate" refer to in environmental chemistry?
- a) Solid particles suspended in air
- b) Water pollutants
- c) Gaseous pollutants
- d) Non-biodegradable waste
Answer: a) Solid particles suspended in air
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What is the full form of BOD in environmental chemistry?
- a) Biological Oxygen Demand
- b) Biological Organic Demand
- c) Biological Oxidation Demand
- d) Biochemical Oxygen Demand
Answer: d) Biochemical Oxygen Demand
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Which of the following pollutants is primarily responsible for acid rain?
- a) Carbon dioxide
- b) Nitrogen oxides
- c) Sulfur dioxide
- d) Chlorofluorocarbons (CFCs)
Answer: c) Sulfur dioxide
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What is the major cause of the greenhouse effect?
- a) Deforestation
- b) Carbon dioxide and other greenhouse gases
- c) Ozone layer depletion
- d) Increased rainfall
Answer: b) Carbon dioxide and other greenhouse gases
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Which gas is primarily responsible for ozone depletion?
- a) Carbon dioxide
- b) Nitrogen oxides
- c) Chlorofluorocarbons (CFCs)
- d) Sulfur dioxide
Answer: c) Chlorofluorocarbons (CFCs)
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What is the term used for the process of removing pollutants from the atmosphere?
- a) Photolysis
- b) Filtration
- c) Pollution control
- d) Oxygenation
Answer: c) Pollution control
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Which of the following is a method of controlling air pollution?
- a) Greenhouse gas emission
- b) Planting more trees
- c) Industrial waste disposal
- d) Acid rain prevention
Answer: b) Planting more trees
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What does the term COD stand for in environmental chemistry?
- a) Chemical Oxygen Demand
- b) Chemical Organic Demand
- c) Carbon Oxidation Demand
- d) Chemical Oxidation Demand
Answer: a) Chemical Oxygen Demand
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Which of the following is a primary cause of water pollution?
- a) Oil spills
- b) Excessive oxygen in water
- c) High concentration of carbon dioxide
- d) Increased algae growth
Answer: a) Oil spills
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What is the most effective method to control water pollution caused by industrial effluents?
- a) Reducing industrial emissions
- b) Reusing waste materials
- c) Proper treatment of effluents before discharge
- d) Using biodegradable chemicals
Answer: c) Proper treatment of effluents before discharge
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What is the term used for the concentration of dissolved oxygen in water?
- a) COD
- b) DO (Dissolved Oxygen)
- c) BOD
- d) Pollution level
Answer: b) DO (Dissolved Oxygen)
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Which of the following pollutants is primarily responsible for the formation of smog in urban areas?
- a) Nitrogen oxides and hydrocarbons
- b) Sulfur dioxide
- c) Carbon monoxide
- d) Particulate matter
Answer: a) Nitrogen oxides and hydrocarbons
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Which of the following is NOT a biotic component of the environment?
- a) Plants
- b) Animals
- c) Microorganisms
- d) Soil
Answer: d) Soil
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