Quiz for Environmental Chemistry

Q1: Which gas is the major contributor to acid rain?

A. CO₂ B. NO₂ C. SO₂ D. CH₄

Q2: Which layer of the atmosphere contains the ozone layer?

A. Troposphere B. Stratosphere C. Mesosphere D. Thermosphere

Q3: What is the main pollutant released by vehicles?

A. Carbon monoxide B. Methane C. Ozone D. Lead oxide

Q4: Which chemical is responsible for ozone depletion?

A. Carbon dioxide B. Methane C. Chlorofluorocarbons D. Nitrous oxide

Q5: Biochemical Oxygen Demand (BOD) is a measure of what?

A. Oxygen used by aquatic plants B. Oxygen demand of fish C. Oxygen needed to decompose organic matter D. Oxygen in pure water

Q6: What causes the greenhouse effect?

A. High levels of oxygen B. Low pressure systems C. Absorption of infrared radiation by gases D. Ozone in the troposphere

Q7: Which oxide of nitrogen is a major air pollutant?

A. N₂O B. NO₂ C. NO D. NO₃⁻

Q8: Which of the following is used in water purification?

A. Alum B. NaCl C. Baking soda D. Vinegar

Q9: Which metal causes Minamata disease?

A. Mercury B. Lead C. Cadmium D. Zinc

Q10: Which of these is not a pollutant?

A. SO₂ B. CO₂ C. O₃ in troposphere D. O₂

Q11: Which is the most toxic heavy metal pollutant?

A. Fe B. Cu C. Pb D. Hg

Q12: The pH of acid rain is typically?

A. 7 B. 5.6 C. 4 D. 8

Q13: Which gas is responsible for photochemical smog?

A. O₃ B. CO C. CH₄ D. O₂

Q14: Which of the following gases is *not* a greenhouse gas?

A. Carbon dioxide B. Methane C. Nitrous oxide D. Oxygen

Q15: Which method is used to remove particulate matter from air?

A. Cyclone separator B. Catalytic converter C. Incineration D. Electrolysis

Q16: What is the main cause of eutrophication?

A. Oil spills B. Thermal pollution C. Nutrient-rich waste D. Pesticide run-off

Q17: Which metal is associated with Itai-itai disease?

A. Lead B. Mercury C. Cadmium D. Arsenic

Q18: Which method is most effective in controlling industrial air pollution?

A. Sedimentation tank B. Electrostatic precipitator C. Water scrubbing D. Photosynthesis

Q19: Which is the major pollutant from nuclear power plants?

A. CO₂ B. Uranium C. Iodine-131 D. Nitrogen oxides