PPSC Chemistry Part V Environmental Chemistry Online Test With Answers

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PPSC Chemistry Part V Environmental Chemistry Online Test

Sr. # Questions Answers Choice
1 Detergents are known to pollute revers and water ways. However, detergents can be made biodegradable and pollution free by taking. cyclic hydrocarbon chain Shorter hydrocarbon chain Unbranched hydrocarbon chain Benzenoid hydrocarbons
2 The smog is essentially caused by the presence of. O3 and N2 O2 and N2 Oxides of sulphur and nitrogen O2 and O3
3 Which of the following responsible for depletion of ozone layer in upper strata of the atmosphere. Polyhalogens Ferrocene Freons Fullerencs
4 Ozone is stratosphere is depleted by CF2Cl2 C7F16 C6H6Cl6 C6F6
5 When rain is accompanied by a thunderstorm, the collected rain water will have pH Slightly lower than that of rain water without thunderatorm Slightly higher than that of rain water without thunderastorm Uninfluenced by occurrence of thunderatorm Which depends on amount of dust in air
6 Earth is protected from U.V. radiations by Carbon dioxide layer Oxygen layer Ozone layer Troposphere
7 Which of the following is not a chemical pollutant. Solid waste Noiso Insecticides Liquid waste
8 Long diseases are about four times more in urban areas as compared to rural areas. This is due to the presence of which of the following. in atmosphere. CO2 NO2 O2 N2
9 Which of the following substance is not present in acid rain. Sulphuric acid Nitric acid Acetic acid Sulphurous acid
10 Which of the following is a source of energy but does not cause pollution. Gaslone Nuclear power plant Fossil fuels Sun
11 Ozone depletion in stratosphere will result in Forest fires Increased incidence of skin cancer Global warming None of the above
12 Increased asthmatic attacks in certain seasons are related to. Inhalation of seasonal pollens Eating of seasonal vegetables Low temperature Wet and dry environment
13 Ozone layer of upper atmosphere is being destroyed by chlorofluorocarbons SO2 Photochemical oxidants O2 and CO2 Smog
14 Domestic waste mostly constitutes Non biodegradable pollution Biodegradable pollution Effluents Air pollution
15 Which of the following is a mode of controlling pollution in big cities. Cleanliness and less use of insecticides Proper disposal of organic wastes, sewage and industrial effluents Broader roads and shifting of factories out of the residential areas All of above
16 Burning of fossil fuels is the main sources of which of the following pollutant. Nitrogen oxide Nitric oxide Nitrous oxide Sulphur dioxide
17 Carbon dioxide content in atmosphere is 0.0034% 0.034 % 0.34 % 3.4 %
18 Which of the following is atmospheric pollutant. CO2 CO O2 N2
19 Drained sewage has B.O.D. More than that of water Less than that of water Equal to that of water None of the above
20 Fish die in water bodies polluted by sewage due to. Pathogens Clogging of gills by silt Reduction in dissolved oxygen Foul smell
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