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1 | |
Which agency sets the air quality standards for outdoor air in the United States? |
| | A) | World Health Organization, WHO |
| | B) | U.S. Department of Transportation, U.S. DOT |
| | C) | U.S. Environmental Protection Agency, EPA |
| | D) | American Chemical Society, ACS |
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2 | |
Which statement about this chemical equation is not true?
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) | The identities of atoms in the reactants are the same as the identities of the atoms in the products. |
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3 | |
The ambient air quality standard for PM10 is 150 mg/m3 for a 24-hour period. What does the term "PM10" mean? |
| | A) | PM10 refers to airborne solids with average diameter less than or equal to 10 micrometers. |
| | B) | PM10 refers to the practice of mixing solids in the atmosphere over 10 minutes. |
| | C) | PM10 refers to particulate matter with mass of 10 mg or more. |
| | D) | PM10 refers to partially mobile solids in the air if ten or more hydrocarbons are present. |
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4 | |
Which factor helps explain why the concentration of carbon monoxide found indoors can be higher than the concentration found outdoors, even if nobody smokes indoors? |
| | A) | Soil or rocks under the house may release carbon monoxide, which is why people purchase detectors. |
| | 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 photosynthesis process. |
| | D) | Faulty furnaces or space heaters may be emitting carbon monoxide. |
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5 | |
Which is the second most abundant gas in a breath? |
| | A) | nitrogen |
| | B) | argon |
| | C) | oxygen |
| | D) | carbon dioxide |
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6 | |
Which chemical equation could correspond to this sphere equation?
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| | A) | Cl2 + O2® 2ClO |
| | B) | N2 + 2O2® 2NO2 |
| | C) | O2 + 2SO2® 2SO3 |
| | D) | N2 + O2® 2NO |
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7 | |
This graph shows the variation of hydrocarbon and ozone concentrations as a function of the time of day for a major metropolitan area. At what time do you expect the peak concentration of nitrogen monoxide to appear?
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| | A) | 8 AM |
| | B) | 10 AM |
| | C) | 12 noon |
| | D) | 2 PM |
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8 | |
The P.S.I. (Pollution Standards Index) is an indicator of the level of air pollution, and is based on the concentration of |
| | A) | SOx and NOx in outdoor air. |
| | B) | formaldehyde in indoor air. |
| | C) | ozone in outdoor air. |
| | D) | cigarette smoke in indoor air. |
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9 | |
Which is the name of the element with symbol C? |
| | A) | chlorine |
| | B) | carbon |
| | C) | cobalt |
| | D) | calcium |
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10 | |
What element is in Group IIIA in the 4th period of the modern Periodic Table of the elements? |
| | A) | scandium |
| | B) | silicon |
| | C) | gallium |
| | D) | germanium |
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11 | |
Which is a true statement comparing inhaled and exhaled air? |
| | 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. |
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12 | |
The concentration of water vapor in the atmosphere of a tropical rain forest may reach 500,000 ppm. What is this value expressed as a percent? |
| | A) | 5% |
| | B) | 50% |
| | C) | 5 x 105% |
| | D) | 5 x 109% |
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13 | |
31.2 million tons for sulfur dioxide (SO2) were released to the atmosphere in 1970 in the U.S. By 1997, 20.3 million tons were released. By what percentage did SO2 emissions drop during this time period? |
| | A) | 11% |
| | B) | 26% |
| | C) | 35% |
| | D) | 54% |
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14 | |
What is the best explanation of "Green Chemistry"? |
| | A) | Green Chemistry is the design of chemical products and processes that reduce or eliminate the use and generation of hazardous substances. |
| | B) | Green Chemistry is a research program aimed at increasing the use of petroleum for production of products other than gasoline and jet fuel. |
| | C) | Green Chemistry refers to the EPA's mandatory programs for recycling paper, glass, plastics, and aluminum. |
| | D) | Green Chemistry refers to agricultural practices for growing organic vegetables without the use of pesticides. |
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15 | |
In order to convert grams per liter (g/L) into grams per gallon (g/gal), which conversion factor is necessary? |
| | A) | liters per gram (L/g) |
| | B) | liters per gallon (L/gal) |
| | C) | gallons per gram (gal/g) |
| | D) | number of gallons |
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16 | |
Which equation 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 |
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17 | |
Which example is incorrectly paired with its appropriate category? |
| | A) | smoke over the World Trade Center, mixture |
| | B) | salt in shaker, element |
| | C) | air in lecture room, mixture |
| | D) | sugar in packet, compound |
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