Environmental Engineering If the time of concentration is 9 minutes, then the intensity of rainfall according to British Ministry of Health formula will be 10 mm/hr 40 mm/hr 4 mm/hr 20 mm/hr 10 mm/hr 40 mm/hr 4 mm/hr 20 mm/hr ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The dissolved oxygen level in natural unpolluted waters at normal temperature is found to be of the order of 100 mg/liter 1 mg/liter 10 mg/liter 1000 mg/liter 100 mg/liter 1 mg/liter 10 mg/liter 1000 mg/liter ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The ratio of 5 day BOD to ultimate BOD is about 43894 43833 43864 1 43894 43833 43864 1 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering 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 bacteria The correct answer is (ii) and (iii) (i) and (iv) (ii) and (iv) (i) and (ii) (ii) and (iii) (i) and (iv) (ii) and (iv) (i) and (ii) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The suitable method for disinfection of swimming pool water is By using potassium permanganate Ultra violet rays treatment Chlorination Lime treatment By using potassium permanganate Ultra violet rays treatment Chlorination Lime treatment ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Which of the following sewers is preferred for combined system of sewage? Rectangular sewer Egg shaped sewer Circular sewer None of these Rectangular sewer Egg shaped sewer Circular sewer None of these ANSWER DOWNLOAD EXAMIANS APP
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