Environmental Engineering in CE Which of the following is the most widely used disinfectant in water treatment? Chlorine Cation exchanger Irradiation of water by ultraviolet light Coagulation Chlorine Cation exchanger Irradiation of water by ultraviolet light Coagulation 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 (iv) (i) and (ii) (ii) and (iii) (i) and (iv) (ii) and (iv) (i) and (ii) (ii) and (iii) (i) and (iv) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE In water treatment, alum[Al2(SO₄)3] is used for the process of Sedimentation Coagulation Disinfection Filtration Sedimentation Coagulation Disinfection Filtration ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Sooty and sulphurous smog formed due to combustion of fossil fuels particularly in winter, continues throughout the day and night. When the moist atmospheric air's water vapor condenses on the solid particles of smoke thereby forming smog (smoke + fog), it causes Respiratory trouble All of these Irritation in eyes Poor visibility due to sky darkening Respiratory trouble All of these Irritation in eyes Poor visibility due to sky darkening ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE As compared to rapid sand filters, slow sand filters give(i) Slower filtration rate(ii) Higher filtration rate(iii) Lesser efficiency in removal of bacteria(iv) Higher efficiency in removal of bacteriaThe correct answer is (i) and (iv) (ii) and (iii) (ii) and (iv) (i) and (ii) (i) and (iv) (ii) and (iii) (ii) and (iv) (i) and (ii) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE __________ content of the phosphate rock is the pollutant of primary interest in a phos-phatic fertiliser plant. Phosphorous Fluorine Calcium Sulphur Phosphorous Fluorine Calcium Sulphur ANSWER DOWNLOAD EXAMIANS APP
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