T Chapter 7. Alr Pollution Which chemicals are most responsible for the The meas
ID: 1613854 • Letter: T
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T Chapter 7. Alr Pollution Which chemicals are most responsible for the The measure of the acidity of a solution is its of ozone molecules? Carbon dioxide and carbon monoxide pH scale ranges between o and 14. pH b Sulfur and nitrogen oxides pare water has a pH of7, and is considered to e, sulfur and carbon oxides have pH values lower than 7, and alkalines have pH values higher than 7. Compounds containing chlorine or bromine All of the above. 30. In which layer of the atmosphere is most of the feared that, with the use of many sSTs Earth's ozone concentrated? tapersonic transports) and the release of Freon. the upper atmosphere will decrease, which, in tum, will cause an increase in the level reaching the surface of the Earth. b ozone, ultraviolet radiation e Ultraviolet, ultraviolet radiation poisonous gas produced in many Carbon dioxide, infrared radiation A naturally occurring radioactive gas derived from the decay of uranium-238. n The reason skin cancer can be caused by an Mostly absorbed by the atmosphere and is increase in ultraviolet radiation, but not in visible not of particular interest, except for certain light, at the Earth's surface is regions in the United States. a That the wavelength ofUV is longer, hence, it d. A strong rock mostly used in building is more destructive. b That there is much more UV than visible light e. A reference to photons emitted in radio at the Earth's surface, An adverse health effect after material has been 4 UV has more energy than visible light and can breakup (ionize) biological molecules more ingested or absorbed into the body is a. A local effect. readily than light. e All of the above. systemic effect. 2& The 1987 United Nations' Montreal Protocol A effect, Was drafted to limit consumption of fossil d fuels to pre-1990 levels. reduction b Provided incentives for voluntary IV. True or False? ozone 1. The best strategy to slow down the rate of depletion is to ban or reduce the use of products e obliged signatories to cut carbon dioxide 4 Was designed to gradually out the that contain chlorine or bromine. is due, at least production of CFCs and other ozone-depleting The so-called "greenhouse effect'" otoinf 2. the opacity to Established guidelines for initiating an radiation. 3. Deforestation is of grave concem because it "emission market,"Explanation / Answer
(25). correct option is (e). All given statements are true and standard statements.
(26). Correct option is (b). Ozone layer is present in upper atmosphere. depletion of ozone layer will lead to harmful UV rays entering the lower atmosphere.
(27). correct option is (d). As UV rays have less wavelength than visible light, they have more energy because E is inversely proportional to wavelength.
(28). correct option is (d).
(29) correct option is (e). chlorine and bromine are highly active in free state and attack ozone rapidly.
(30). correct option is (d). about 90% ozone is found in stratosphere. remaining is found in troposphere(lower atmospshere).
(31). correct option is (b).
(32). correct option is
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