 |
| 1 | |
Which is the second most abundant gas that you inhale with each breath? |
| | A) | nitrogen |
| | B) | argon |
| | C) | oxygen |
| | D) | carbon dioxide |
|
|
|
| 2 | |
Which statement comparing inhaled and exhaled air is true? |
| | A) | Inhaled air contains more oxygen than exhaled air. |
| | B) | Inhaled air contains more carbon dioxide than exhaled air. |
| | C) | Inhaled air contains more water vapor than exhaled air. |
| | D) | Inhaled air contains more argon than exhaled air. |
|
|
|
| 3 | |
Which ranks the gasses in the troposphere in order of increasing concentration? |
| | A) | CO2 < Ar < O2 < N2 |
| | B) | CO2 < Ar < N2 < O2 |
| | C) | Ar < CO2 < O2 < N2 |
| | D) | Ar < CO2 < N2 < O2 |
|
|
|
| 4 | |
In the United States as of 2007, air quality standards were set for all of these gases except for which one? |
| | A) | CO2 |
| | B) | CO |
| | C) | SO2 |
| | D) | O3 |
|
|
|
| 5 | |
In the United States, the national ambient air quality standard for PM10 is 150 μg/m3 for a 24-hour period. What does the term PM10 refer to? |
| | A) | particulate matter with an average diameter less than or equal to 10 micrometers. |
| | B) | the practice of mixing solids in the atmosphere over 10 minutes. |
| | C) | particulate matter with a mass of 10 μg or more. |
| | D) | solids in the air with ten or more hydrocarbons. |
|
|
|
| 6 | |
Which factor helps explain why the concentration of carbon monoxide found indoors can be higher than the concentration found outdoors, even if no one smokes indoors? |
| | A) | Soil or rocks under the house may release carbon monoxide. |
| | B) | New carpets may be releasing carbon monoxide, which is responsible for the "new carpet" odor. |
| | C) | Plants may be emitting carbon monoxide as part of their photosynthetic processes. |
| | D) | Faulty furnaces or space heaters may be emitting carbon monoxide. |
|
|
|
| 7 | |
Which statement about this chemical equation is false?
2 NO + O2 ----> 2 NO2 |
| | A) | The number of atoms in the reactants is equal to the number of atoms in the products. |
| | B) | The number of molecules in the reactants is equal to the number of molecules in the products. |
| | C) | The total mass of the reactants is equal to the total mass of the products. |
| | D) | No statements is false. |
|
|
|
| 8 | |
Which chemical equation could this represent?
 <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0073048763/232419/Image1.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (10.0K)</a>]]> |
| | A) | Cl2 + O2 → 2ClO |
| | B) | N2 + 2O2 → 2NO2 |
| | C) | O2 + 2SO2 → 2SO3 |
| | D) | N2 + O2 → 2NO |
|
|
|
| 9 | |
The chemical equation N2 + 2O2→ 2NO2 could be represented in this way.
<![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0073048763/232419/Image1.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (10.0K)</a>]]>
Which statement is true about the formation of the pollutant NO2 in the atmosphere? |
| | A) | NO2 forms slowly in the atmosphere from the NO emitted by vehicles. |
| | B) | NO2 forms slowly in the atmosphere from ozone. |
| | C) | NO2 is emitted directly to the atmosphere from automobile engines. |
| | D) | NO2 is emitted directly to the atmosphere from power plants. |
|
|
|
| 10 | |
This graph shows the hydrocarbon and ozone concentrations as a function of the time for a major metropolitan area. At what time would you expect the peak concentration of nitrogen monoxide (NO)?
 <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0073048763/232419/Image2.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (9.0K)</a>]]> |
| | A) | 4 am |
| | B) | 8 am |
| | C) | 4 pm |
| | D) | 8 pm |
|
|
|
| 11 | |
This graph shows the hydrocarbon and ozone concentrations as a function of the time for a major metropolitan area. Although nitrogen monoxide (NO) is not shown, it would be expected to peak with morning traffic, about the same time as the hydrocarbons. When would you expect the peak concentration of nitrogen dioxide (NO2)?
<![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0073048763/232419/Image2.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (9.0K)</a>]]> |
| | A) | At the same time as NO. They are formed together |
| | B) | An hour or so before the NO peak. NO2 is a precursor to NO. |
| | C) | An hour or so after the NO peak. NO2 takes time to form in the atmosphere. |
| | D) | An hour or so the O3 peak. Ozone decomposes to form NO2. |
|
|
|
| 12 | |
Which elements are paired correctly with these chemical symbols? Ca, C, Cl, Co? |
| | A) | carbon, calcium, chlorine, copper |
| | B) | carbon, calcium, chlorine, cobalt |
| | C) | calcium, carbon, chlorine, copper |
| | D) | calcium, carbon, chlorine, cobalt |
|
|
|
| 13 | |
In a tropical rain forest, the concentration of water vapor in the atmosphere may reach 50,000 ppm. What is this value expressed as a percent? |
| | A) | 0.05 % |
| | B) | 0.5 % |
| | C) | 5 % |
| | D) | 50 % |
|
|
|
| 14 | |
In the atmosphere, CO2 is still under 0.04%, but increasing each year. What is this value expressed in parts per million? |
| | A) | 400 ppm |
| | B) | 40 ppm |
| | C) | 4 ppm |
| | D) | 0.4 ppm |
|
|
|
| 15 | |
This graph shows the sources of the pollutant sulfur dioxide (SO2) in the United States in recent years. Which one contributes the largest amount?
 <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0073048763/232419/Image3.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (19.0K)</a>]]> |
| | A) | industrial processes |
| | B) | coal-fired power plants ("fuel combustion") |
| | C) | transportation |
| | D) | all other sources |
|
|
|
| 16 | |
Which statement best explains green chemistry? |
| | A) | the design of chemical products and processes that reduce or eliminate the use and generation of hazardous substances. |
| | B) | research to minimize the use of gasoline and jet fuel. |
| | C) | a mandatory program to recycle paper, glass, plastics, and aluminum. |
| | D) | agricultural program to grow vegetables without the use of pesticides. |
|
|
|
| 17 | |
Which equation for the complete combustion of methane is balanced? |
| | A) | CH4 + O2 → H2O + CO2 |
| | B) | 2 CH4 + O2 → H2O + 2 CO2 |
| | C) | CH4 + 2 O2 → 2 H2O + CO2 |
| | D) | 2 CH4 + 2 O2 → 2 H2O + CO2 |
|
|
|
| 18 | |
Which example is incorrectly paired with its category? |
| | A) | smoke from a campfire, mixture |
| | B) | table salt, element |
| | C) | air in lecture room, mixture |
| | D) | sugar in packet, compound |
|
|
|
| 19 | |
Which of the numbered elements are metals?
 <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0073048763/232419/Image4.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (8.0K)</a>]]> |
| | A) | 1 only |
| | B) | 1 and 2 only |
| | C) | 1, 2, and 3 only |
| | D) | 4 and 5 only |
|
|
|
| 20 | |
In a particular country, legislation is introduced requiring vehicles and industry to completely stop emitting pollutants in order to end air pollution. Which statement gives the best analysis of this proposal? |
| | A) | This goal is attainable and requires that the needed regulations and economic incentives be put in place. |
| | B) | This goal is attainable, but only if all other countries in world were willing to make similar sacrifices. |
| | C) | This goal is not attainable, but only because it would require too much money and too much government control. |
| | D) | This goal is not attainable. Even if all vehicular and industrial sources were to stop polluting, there would be other sources of pollutants. |
|
|
.