Hazardous materials
Question 1
Unsaturated hydrocarbons are generally more reactive (less stable) than saturated hydrocarbons. Which of the following organic compounds is the LEAST reactive?
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Cyclohexane |
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[removed] |
CH2=CH-CH=CH2 |
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CH3-C�? C-CH3 |
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[removed] |
2-methylpropene |
10 points
Question 2
Ethylene is a chemical used in hastening the ripening of apples and bananas. When responding to an ethylene incident, what is the major hazard of which the responder should be most concerned?
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Toxic |
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Corrosive |
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Flammable |
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Reactive |
10 points
Question 3
PCBs (polychlorinated biphenyls) are man-made organic chemicals that were first manufactured in 1929, but their manufacture was banned in 1979 when they were found to cause effects such as cancer, birth defects, and liver damage. Which of the following is FALSE regarding PCBs?
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If analysis of a transformer fluid shows a PCB concentration of 50 ppm, EPA considers the transformer PCB contaminated. |
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The highly toxic compounds polychlorinated dibenzofurans and dibenzo-p-dioxins are products of incomplete combustion of PCB fires. |
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PCB transformers are still in use today. |
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The tolerance limit of PCB residues in shellfish is 2 ppm. |
10 points
Question 4
What highly volatile liquid can cause grave danger to EHS and FS professionals at incident scenes because its vapor is 2.6 times heavier than air, has an extremely low autoignition temperature of 212 degrees Fahrenheit, and has a flammable range extending from 1% to 44% by volume?
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Carbon disulfide |
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[removed] |
Trimethylamine |
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Ethyl acetate |
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Methyl ethyl ketone |
10 points
Question 5
Alkylation is a petroleum refining process wherein an alkane interacts with an alkene to produce an alkylate. An alkylate is added to gasoline to improve its combustion. What alkylate is formed when isobutane reacts with propylene?
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Isooctane |
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[removed] |
Trimethylpentane |
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[removed] |
Dimethylpentane, |
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[removed] |
Dimethylhexane |
Question 6
Ethanol Fires can be difficult to extinguish. Discuss why this is true and what approach firefighters might use to fight this type of fire.
Your total response must be at least 200 words in length. All sources used, must be referenced. Paraphrased and/or quoted materials must have accompanying in-text and reference citations in APA format.
25 points
Question 7
The multiple components of crude oil are separated by a process called fractionation (fractional distillation) at petroleum refineries.
Your response must be at least 200 words in length. All sources used, must be referenced. Paraphrased and/or quoted materials must have accompanying in-text and reference citations in APA format.
8.According to the American Petroleum Institute (API), hydraulic fracturing (fracking) and horizontal drilling are unlocking vast U.S. reserves of oil and natural gas found in shale and other tight-rock formations. This fracking technology for the United States means security, economic growth, and jobs. Critics, however, are against fracking, pointing out environmental impacts such as groundwater pollution and putting people at risk of serious illnesses. What are your thoughts on this controversy?
