Environmental Engineering in CE Inhalation of silica dust by human being during hand drilling in mica mining, lead & zinc mining, silica refractory manufacture and in foundaries causes Asphyxiation (suffocation) Tuberculosis All of these Shortness of breath Asphyxiation (suffocation) Tuberculosis All of these Shortness of breath ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Cleaning is done by(i) Scraping and removal in filters slow sand(ii) Back washing in slow sand filters(iii) Scraping and removal in filters rapid sand(iv) Back washing in rapid sand filtersThe correct answer is (ii) and (iii) (ii) and (iv) (i) and (iv) (i) and (ii) (ii) and (iii) (ii) and (iv) (i) and (iv) (i) and (ii) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Maximum permissible residual chlorine in treated water should be __________ mg/litre. 5 to 10 2 to 3 0.001 to 0.01 02 to 0.3 5 to 10 2 to 3 0.001 to 0.01 02 to 0.3 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'? Dust & mists Photochemical smog & soot None of these Smoke & fumes Dust & mists Photochemical smog & soot None of these Smoke & fumes ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The function of skimming tank in sewage treatment is to remove __________ substances. Gritty & inorganic Dissolved solid Oil & fatty Suspended solid Gritty & inorganic Dissolved solid Oil & fatty Suspended solid ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Oilish impurities present the effluent discharged from the electroplating industry is normally not removed by Floatation & skimming Ultrafiltration Chemical coagulation Centrifugation Floatation & skimming Ultrafiltration Chemical coagulation Centrifugation ANSWER DOWNLOAD EXAMIANS APP
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