Question 1

Which of the following is used to remove particulate matter from smokestack gases?

Accepted Answer

A)  bag filtration 
B)  electrostatic precipitators 
C)  wet scrubbers 
D)  All of the above are used to remove particulate matter. 
A)  bag filtration 
B)  electrostatic precipitators 
C)  wet scrubbers 
D)  All of the above are used to remove particulate matter.

Question 2

The major source of photochemical smog is

Accepted Answer

A)  automobile emissions. 
B)  industrial emissions. 
C)  fossil fuel power plant emissions. 
D)  nuclear power plant emissions. 
A)  automobile emissions. 
B)  industrial emissions. 
C)  fossil fuel power plant emissions. 
D)  nuclear power plant emissions.

Question 3

All of the following statements about carbon monoxide (CO) pollution in the United States are true EXCEPT

Accepted Answer

A)  carbon monoxide makes up over 60% (by mass) of all air pollutants emitted into the atmosphere. 
B)  the concentration of carbon monoxide is higher in urban areas than in rural areas. 
C)  people exposed to carbon monoxide have a higher risk of heart attacks. 
D)  the major source of carbon monoxide emissions is industrial sources, such as metal processing. 
A)  carbon monoxide makes up over 60% (by mass) of all air pollutants emitted into the atmosphere. 
B)  the concentration of carbon monoxide is higher in urban areas than in rural areas. 
C)  people exposed to carbon monoxide have a higher risk of heart attacks. 
D)  the major source of carbon monoxide emissions is industrial sources, such as metal processing.

Question 4

Nanoscale catalysts show great promise for making chemical processes more efficient and thus saving resources.

Accepted Answer

A) True 
 B)False

Question 5

Nitrogen is converted to nitrates by which of the following reactions?

Accepted Answer

A)  N2 + O2 + energy(lightning) → 2 NO 
B)  2 NO + O2 → 2 NO2 
C)  3 NO2 + H2O → 2 HNO3 + NO 
D)  All of these reactions are involved in converting nitrogen to nitrates. 
A)  N2 + O2 + energy(lightning) → 2 NO 
B)  2 NO + O2 → 2 NO2 
C)  3 NO2 + H2O → 2 HNO3 + NO 
D)  All of these reactions are involved in converting nitrogen to nitrates.

Question 6

Pollution levels are not affected by temperature inversions.

Accepted Answer

A) True 
 B)False

Question 7

The layer of the atmosphere that is closest to the surface of the earth is the

Accepted Answer

A)  mesosphere. 
B)  stratosphere. 
C)  thermosphere. 
D)  troposphere. 
A)  mesosphere. 
B)  stratosphere. 
C)  thermosphere. 
D)  troposphere.

Question 8

It is cost effective to try to eliminate all air pollution.

Accepted Answer

A) True 
 B)False

Question 9

Acid rain is precipitation with a pH

Accepted Answer

A)  above 11.5. 
B)  above 8.2. 
C)  below 5.6. 
D)  below 3.6. 
A)  above 11.5. 
B)  above 8.2. 
C)  below 5.6. 
D)  below 3.6.

Question 10

Indoor "air cleaners" are often advertised. However, some air cleaners actually generate which of the following pollutants?

Accepted Answer

A)  mold 
B)  CFCs 
C)  methane 
D)  ozone 
A)  mold 
B)  CFCs 
C)  methane 
D)  ozone

Question 11

"Pure" rainfall (rainfall undisturbed by human influences) has a pH of approximately 5.6. The pH of rain in some areas has been measured at 2.6. The acidity of this rain is

Accepted Answer

A)  0.3 times that of normal rain. 
B)  3 times that of normal rain. 
C)  300 times that of normal rain. 
D)  1000 times that of normal rain. 
A)  0.3 times that of normal rain. 
B)  3 times that of normal rain. 
C)  300 times that of normal rain. 
D)  1000 times that of normal rain.

Question 12

Running an engine with a richer (more fuel, less air) combustion mixture lowers nitrogen oxide emissions from automobiles. The problem is that

Accepted Answer

A)  hydrocarbon emission increases. 
B)  carbon monoxide emission increases. 
C)  fuel efficiency decreases. 
D)  all of the above occur. 
A)  hydrocarbon emission increases. 
B)  carbon monoxide emission increases. 
C)  fuel efficiency decreases. 
D)  all of the above occur.

Question 13

Which of the following is a form of nitrogen fixation?

Accepted Answer

A)  N2  + O2 + energy(lightning) → 2 NO 
B)  N2  + 3 H2 → 2 NH3 
C)  N2 + bacteria → nitrates 
D)  All are forms of nitrogen fixation. 
A)  N2  + O2 + energy(lightning) → 2 NO 
B)  N2  + 3 H2 → 2 NH3 
C)  N2 + bacteria → nitrates 
D)  All are forms of nitrogen fixation.

Question 14

According to the EPA, second-hand smoke is a Class A carcinogen.

Accepted Answer

A) True 
 B)False

Question 15

The day starts out bright and sunny. Later, a brown haze develops. This indicates the presence of

Accepted Answer

A)  nitrogen dioxide. 
B)  ozone. 
C)  carbon monoxide. 
D)  methane. 
A)  nitrogen dioxide. 
B)  ozone. 
C)  carbon monoxide. 
D)  methane.

Question 16

Air pollution is a worldwide problem today.

Accepted Answer

A) True 
 B)False

Question 17

The word smog is believed to have originated in

Accepted Answer

A)  London. 
B)  Los Angeles. 
C)  Mexico City. 
D)  Japan. 
A)  London. 
B)  Los Angeles. 
C)  Mexico City. 
D)  Japan.

Question 18

Which of the following human activities contributed to the pollution of our ancestral air?

Accepted Answer

A)  Discovering, making, and using tools contributed to air pollution. 
B)  The discovery and use of fire contributed to air pollution. 
C)  The development of crop farming contributed to air pollution. 
D)  All of these contributed to air pollution. 
A)  Discovering, making, and using tools contributed to air pollution. 
B)  The discovery and use of fire contributed to air pollution. 
C)  The development of crop farming contributed to air pollution. 
D)  All of these contributed to air pollution.

Question 19

The metal catalyst in catalytic converters is often

Accepted Answer

A)  gold. 
B)  zinc. 
C)  platinum. 
D)  silver. 
A)  gold. 
B)  zinc. 
C)  platinum. 
D)  silver.

Question 20

List three sources of indoor pollution.

Accepted Answer

Three common sources of indoor pollution

Exam 13: Air

Which of the following is used to remove particulate matter from smokestack gases?

The major source of photochemical smog is

All of the following statements about carbon monoxide (CO) pollution in the United States are true EXCEPT

Nanoscale catalysts show great promise for making chemical processes more efficient and thus saving resources.

Nitrogen is converted to nitrates by which of the following reactions?

Pollution levels are not affected by temperature inversions.

The layer of the atmosphere that is closest to the surface of the earth is the

It is cost effective to try to eliminate all air pollution.

Acid rain is precipitation with a pH

Indoor "air cleaners" are often advertised. However, some air cleaners actually generate which of the following pollutants?

"Pure" rainfall (rainfall undisturbed by human influences) has a pH of approximately 5.6. The pH of rain in some areas has been measured at 2.6. The acidity of this rain is

Running an engine with a richer (more fuel, less air) combustion mixture lowers nitrogen oxide emissions from automobiles. The problem is that

Which of the following is a form of nitrogen fixation?

According to the EPA, second-hand smoke is a Class A carcinogen.

The day starts out bright and sunny. Later, a brown haze develops. This indicates the presence of

Air pollution is a worldwide problem today.

The word smog is believed to have originated in

Which of the following human activities contributed to the pollution of our ancestral air?

The metal catalyst in catalytic converters is often

List three sources of indoor pollution.

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