Environmental Engineering in CE The average thickness of ozone layer in stratosphere is about __________ dobson unit (DU). 1500 230 750 20 1500 230 750 20 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Lung cancer & DNA breakage are the major ill effects of excessive ozone exposure to human beings. Ozone layer depletion in the atmosphere is mainly caused by the presence of CO₂ SO₂ CFC (chloro fluoro carbon) Hydrocarbons CO₂ SO₂ CFC (chloro fluoro carbon) Hydrocarbons ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is not an air pollutant? Pesticides Carcinogens Ozone Metallic powders Pesticides Carcinogens Ozone Metallic powders ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE 'Particulate' air pollutants are finely divided solids and liquids. Which of the following is not a 'particulate'? Smoke & fumes Photochemical smog & soot Dust & mists None of these Smoke & fumes Photochemical smog & soot Dust & mists None of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE If the coli form bacteria is present in a sample of water, then the coli-form test to be conducted is(i) Presumptive coli-form test(ii) Confirmed coli-form test(iii) Completed coli-form test Only (i) All (i), (ii) and (iii) Both (i) and (iii) Both (i) and (ii) Only (i) All (i), (ii) and (iii) Both (i) and (iii) Both (i) and (ii) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Presence of non-biodegradable substances, like alkyl benzene sulphonate (ABS) from the detergents in polluted water stream causes Explosion hazards Fire hazards Depletion of dissolved oxygen Persistent foam Explosion hazards Fire hazards Depletion of dissolved oxygen Persistent foam ANSWER DOWNLOAD EXAMIANS APP
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