Environmental Engineering If the time of concentration is 9 minutes, then the intensity of rainfall according to British Ministry of Health formula will be 20 mm/hr 4 mm/hr 10 mm/hr 40 mm/hr 20 mm/hr 4 mm/hr 10 mm/hr 40 mm/hr ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Which of the following unit works in anaerobic conditions? Trickling filters Sedimentation tank Activated sludge treatment Sludge digestion tank Trickling filters Sedimentation tank Activated sludge treatment Sludge digestion tank ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The chemical most commonly used to increase speed of sedimentation of sewage is Sodium permanganate Sulphuric acid Lime Copper sulphate Sodium permanganate Sulphuric acid Lime Copper sulphate ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Sewerage system is usually designed for 26 years 27 years 25 years 28 years 26 years 27 years 25 years 28 years ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The velocity of flow of water in a sedimentation tank is about 15 to 30 cm/sec 15 to 30 cm/minute 5 to 10 cm/sec 15 to 30 cm/hour 15 to 30 cm/sec 15 to 30 cm/minute 5 to 10 cm/sec 15 to 30 cm/hour ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The detention period in coagulation tanks is usually kept as 2 to 6 days 30 to 45 minutes 2 to 6 hours 1 to 2 minutes 2 to 6 days 30 to 45 minutes 2 to 6 hours 1 to 2 minutes ANSWER DOWNLOAD EXAMIANS APP
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