Environmental Engineering in CE Maximum permissible limit of mercury in human blood is __________ micrograms/100 c.c. 82 1 19 7 82 1 19 7 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Presence of dissolved impurities of __________ is responsible for the red brownish color of water. Iron & manganese Arsenic Carbonates Bi-carbonates Iron & manganese Arsenic Carbonates Bi-carbonates ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Ozone is A secondary pollutant A primary pollutant Impervious to ultra-violet rays Both B & C A secondary pollutant A primary pollutant Impervious to ultra-violet rays Both B & C ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following air pollutants is not toxic to vegetation i.e., doesn't cause vegetation damage? Sulphur dioxide & spray of weed killers Carbon monoxide Smog & ozone Hydrogen fluoride & nitrogen oxides Sulphur dioxide & spray of weed killers Carbon monoxide Smog & ozone Hydrogen fluoride & nitrogen oxides ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is not an air pollutant? Metallic powders Ozone Pesticides Carcinogens Metallic powders Ozone Pesticides Carcinogens ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Coal mines drainage waste water (acidic in nature) results from the earth's water percolating through the voids created in coal bed during mining. This polluted water which either drains out naturally to water courses or are removed before starting the mining is None of these Neutralised by alkali treatment Left as such without any treatment Diluted with fresh water to reduce its acidity None of these Neutralised by alkali treatment Left as such without any treatment Diluted with fresh water to reduce its acidity ANSWER DOWNLOAD EXAMIANS APP
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