41. Which of the following is not a consequence of air pollution?
a) Acid rain
b) Ozone depletion
c) Increased biodiversity
d) Smog
Answer: c) Increased biodiversity
42. What is the name of the atmospheric layer above the troposphere where most commercial airplanes fly?
a) Stratosphere
b) Mesosphere
c) Thermosphere
d) Ionosphere
Answer: a) Stratosphere
43. Which of the following is not a secondary air pollutant?
a) Ozone
b) Sulfuric acid
c) Nitric acid
d) Carbon dioxide
Answer: d) Carbon dioxide
44. Which of the following is a common indoor air pollutant?
a) Carbon monoxide
b) Sulfur dioxide
c) Nitrogen dioxide
d) Ozone
Answer: a) Carbon monoxide
45. Which of the following is not a measure of air pollution?
a) Parts per million
b) Parts per billion
c) Decibels
d) Micrograms per cubic meter
Answer: c) Decibels
