Skip to main content
United States
Jump To
Support
Register or Log In
Support
Register or Log In
Instructors
Browse Products
Getting Started
Students
Browse Products
Getting Started
Self-test questions: Chapter 07
Return to Environmental Chemistry 4e student resources
Self-test questions: Chapter 07
Quiz Content
*
not completed
.
Which one(s) of the following units could apply to the air exchange rate for a building?
mg m
-3
h
-1
correct
incorrect
mg h
-1
correct
incorrect
m
-3
h
-1
correct
incorrect
h
-1
correct
incorrect
m
3
h
correct
incorrect
*
not completed
.
Which of the following statements regarding atmospheric pollutants is/are true? (Please select all that apply)
Atmospheric lead is considered to be a secondary pollutant
correct
incorrect
For a gas in the atmosphere, a safe mixing ratio when specified for a 24 h period is always less than that for a 1 h period
correct
incorrect
Elevated levels of particulates and of sulfur dioxide often occur together in an urban atmosphere
correct
incorrect
Ozone levels provide an integrative measure of levels of hydrocarbons, carbon monoxide and nitrogen oxides in the atmosphere
correct
incorrect
Carbon dioxide is at least partially removed from automobile exhaust by a catalytic converter
correct
incorrect
*
not completed
.
The concentration of formaldehyde in a room (P°, 20°C) is found to be 1.2 μg m
-3
. What is the mixing ratio in ppbv?
1.2
correct
incorrect
0.83
correct
incorrect
0.96
correct
incorrect
1200
correct
incorrect
6.0
correct
incorrect
*
not completed
.
Which of the following statements regarding atmospheric pollutants is/are true? (Please select all that apply)
Some solid particulate matter in the PM
2.5
category is derived from natural sources
correct
incorrect
Ozone is emitted from both internal combustion engines and coal fired power plants
correct
incorrect
Total solid particulate levels and sulfur dioxide concentrations are often related
correct
incorrect
Combustion of coal and of diesel fuel are significant sources of sulfur dioxide
correct
incorrect
Atmospheric lead is sometimes the result of using high octane gasoline in automobiles
correct
incorrect
*
not completed
.
Which of the following statements about air quality indices is/are true? (Please select all that apply)
The US air quality index (AQI) is a combined average of individual AQI values
correct
incorrect
Air quality index values are reported on a scale of 0 to 100
correct
incorrect
The Multi-Pollution Index (MPI) uses atmospheric concentrations in contrast to the AQI which uses mixing ratios
correct
incorrect
Large negative values of MPI indicate good quality air
correct
incorrect
Mixing ratio values used for the AQI are all calculated on a 24 h basis
correct
incorrect
*
not completed
.
Which of the following statements about indoor air pollutants is/are true? (Please select all that apply)
Fuel-derived nitrogen is one source for producing nitric oxide during indoor combustion
correct
incorrect
Polybrominated diphenyl ether compounds act as flame retardants by supplying bromine to terminate radical chain reactions
correct
incorrect
In urea formaldehyde foams, there can be rapid release of formaldehyde from end groups in the polymer
correct
incorrect
Radon is a common constituent of soils and other geological materials
correct
incorrect
Both cooking and tobacco smoking are sources of PAH compounds in indoor atmospheres
correct
incorrect
*
not completed
.
Which of the following statements about gases released during indoor combustion is/are true? (Please select all that apply)
Much more NO is generated when burning natural gas than when burning wood
correct
incorrect
Sulfur dioxide emissions are not usually a problem from indoor combustion
correct
incorrect
Combustion of wood emits more particulates but less VOCs than does natural gas
correct
incorrect
Formaldehyde is present in the gas stream from tobacco burning
correct
incorrect
In a building, mixing ratios of carbon dioxide that are double that of ambient air are considered to be dangerous
correct
incorrect
*
not completed
.
Which of the following statements about asbestos is/are true? (Please select all that apply)
A world-wide ban on the industrial applications of asbestos is now in effect
correct
incorrect
Persons living in rural areas remote from mine sites do not inhale asbestos fibres
correct
incorrect
In air, longer fibres are generally considered to be more dangerous to human health than shorter fibres
correct
incorrect
Physical, rather than chemical, analysis is the preferred method of measurement
correct
incorrect
Mesothelioma and liver cancer are two diseases which have been traced to asbestos
correct
incorrect
*
not completed
.
Which of the following statements regarding the major factors determining the quality of indoor air is/are true? (Please select all that apply)
A pollutant in the air outdoors around a well-sealed building will be found in the indoor air even with an extremely low air exchange rate
correct
incorrect
Having a high exchange rate of air in a building will eventually eliminate all pollutants
correct
incorrect
Newly installed carpets can increase the amount of pollutant materials in indoor air
correct
incorrect
Any activity conducted indoors is likely to affect the quality of the indoor air
correct
incorrect
Concrete used in the construction of homes does not negatively affect indoor air quality
correct
incorrect
*
not completed
.
VOCs are produced indoors at the rate of 9.5 mg m
-3
h
-1
and have indoor and outdoor concentrations of 1000 and 50 μg m
-3
respectively, determine the air exchange rate. (Please select all that apply)
12 h
-1
correct
incorrect
0.083 min
-1
correct
incorrect
0.167 min
-1
correct
incorrect
6.1 min
correct
incorrect
10 h
-1
correct
incorrect
Previous Question
Submit Quiz
Next Question
Reset
Exit Quiz
Review & Submit
Submit Quiz
Are you sure?
You have some unanswered questions. Do you really want to submit?
Back to top
Printed from , all rights reserved. © Oxford University Press, 2024
Select your Country