Environmental Engineering Which of the following unit works in anaerobic conditions? Sedimentation tank Sludge digestion tank Activated sludge treatment Trickling filters Sedimentation tank Sludge digestion tank Activated sludge treatment Trickling filters ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Turbidity is measured on Standard silica scale Standard cobalt scale Platinum cobalt scale Standard platinum scale Standard silica scale Standard cobalt scale Platinum cobalt scale Standard platinum scale 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 (i) and (ii) (i) and (iv) (ii) and (iv) (ii) and (iii) (i) and (ii) (i) and (iv) (ii) and (iv) (ii) and (iii) 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 1000 mg/liter 1 mg/liter 10 mg/liter 100 mg/liter 1000 mg/liter 1 mg/liter 10 mg/liter 100 mg/liter ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering As compared to geometrical increase method of forecasting population, arithmetical increase method gives Higher value Same value Accurate value Lesser value Higher value Same value Accurate value Lesser value ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The treatment of water with bleaching powder is known as De-chlorination Pre-chlorination Hypo-chlorination Super chlorination De-chlorination Pre-chlorination Hypo-chlorination Super chlorination ANSWER DOWNLOAD EXAMIANS APP
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