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| 1 | |
What public health concerns are connected with poor air quality? |
| | A) | lung cancer, asthma and bronchitis, and cardiovascular disease |
| | B) | lung cancer, asthma and bronchitis only |
| | C) | cardiovascular disease, asthma and bronchitis only |
| | D) | asthma and bronchitis only |
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| 2 | |
In the air you breathe, which gas has the lowest concentration? |
| | A) | helium |
| | B) | carbon dioxide |
| | C) | argon |
| | D) | oxygen |
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| 3 | |
Which elements are paired correctly with these chemical symbols? S, Si, Au? |
| | A) | sulfur, silicon, silver |
| | B) | sulfur, silver, gold |
| | C) | silver, silicon, gold |
| | D) | sulfur, silicon, gold |
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| 4 | |
Which of the numbered elements are known as inert gases?
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| | A) | 1 only |
| | B) | 1 and 2 only |
| | C) | 4 and 5 only |
| | D) | 5 only |
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| 5 | |
Which of these gases is not hazardous to breath in low concentration? |
| | A) | nitrogen dioxide |
| | B) | sulfur dioxide |
| | C) | carbon monoxide |
| | D) | carbon dioxide |
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| 6 | |
Which is hazardous when present in air because it is colorless, odorless, and can bind to hemoglobin more strongly than oxygen? |
| | A) | mold and mildew from dirty air ducts |
| | B) | dry cleaning fluid from clothing and upholstery |
| | C) | carbon monoxide from faulty space heaters |
| | D) | soot from cigarette smoke |
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| 7 | |
Which chemical equation could correspond to this representation? Note: although heat is not shown, it would need to be present as well.
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| | A) | 2 H2 + O2 → 2 H2O |
| | B) | 2 F + 2 F → 2 F2 |
| | C) | N2 + 2 O2 → 2 NO2 |
| | D) | N2 + O2 → 2 NO |
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| 8 | |
Which region of the atmosphere contains ground-level ozone, that is, the "bad" ozone? |
| | A) | ionosphere |
| | B) | mesosphere |
| | C) | stratosphere |
| | D) | troposphere |
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| 9 | |
Ground-level ozone (in the troposphere) is "bad" for all these reasons except one. Which one? |
| | A) | It can cause lung cancer. |
| | B) | It can damage vegetation. |
| | C) | It can aggravate existing asthma. |
| | D) | It can cause a burning sensation in your eyes. |
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| 10 | |
Which compound, when present in the troposphere, is involved in the formation of ozone? |
| | A) | CO |
| | B) | CO2 |
| | C) | NO |
| | D) | SO2 |
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| 11 | |
Which list is in order of increasing concentration? |
| | A) | 1 % < 1 ppm < 1 ppb |
| | B) | 1 ppm < 1 ppb < 1% |
| | C) | 1 ppb < 1 ppm < 1% |
| | D) | 1 ppm < 1% < 1 ppb |
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| 12 | |
Which reaction takes place in the catalytic converter of an automobile? |
| | A) | conversion of CO2 to CO |
| | B) | conversion of NO to N2 and O2 |
| | C) | conversion of SO2 to S and O2 |
| | D) | conversion of N2 and O2 to NO2 |
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| 13 | |
VOCs are volatile organic compounds. What does volatile mean? |
| | A) | reacts easily |
| | B) | burns easily |
| | C) | evaporates easily |
| | D) | condenses easily |
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| 14 | |
Which of these can be involved in forming VOCs (volatile organic compounds)? |
| | A) | gasoline |
| | B) | gasoline and paint |
| | C) | gasoline, paint, and nail polish |
| | D) | gasoline, paint, nail polish, and sugar |
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| 15 | |
Although water evaporates fairly easily, it is not considered a VOC (volatile organic compound) because |
| | A) | it is not volatile |
| | B) | it is not organic |
| | C) | it is neither organic nor a compound |
| | D) | it is neither volatile nor a compound |
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| 16 | |
Which of these gases is not part of the exhaust of an automobile engine? |
| | A) | water vapor |
| | B) | carbon dioxide |
| | C) | carbon monoxide |
| | D) | ozone |
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| 17 | |
Which of these are both hydrocarbons? |
| | A) | water and steam |
| | B) | carbon dioxide and carbon monoxide |
| | C) | hydrogen chloride and hydrogen bromide |
| | D) | methane and ethane |
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| 18 | |
If a hydrocarbon is burned under the conditions where oxygen is plentiful, water vapor and ___________ are the most likely products. |
| | A) | carbon dioxide |
| | B) | carbon monoxide |
| | C) | soot |
| | D) | particulate matter |
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| 19 | |
Which chemical equation shows the combustion of a hydrocarbon under conditions in which oxygen is limited (i.e., incomplete combustion)? |
| | A) | 2 C8H18 + 17 O2 → 16 CO + 18 H2O |
| | B) | C2H4 + 3 O2 → 2 CO2 + 2 H2O |
| | C) | C6H12O6 → 2 C2H5OH + 2 CO2 |
| | D) | C2H4 + H2 → C2H6 |
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| 20 | |
If this equation for the complete combustion of ethanol is balanced with whole number coefficients, what is the coefficient for O2?
__ C2H5OH + __ O2 → __ CO2 + __ H2O |
| | A) | 1 |
| | B) | 3 |
| | C) | 5 |
| | D) | 7 |
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