Environmental Engineering In water treatment, rapid gravity filters are adopted to remove Dissolved solids and dissolved gases Bacteria and colloidal solids Dissolved organic substances Floating solids and dissolved inorganic solids Dissolved solids and dissolved gases Bacteria and colloidal solids Dissolved organic substances Floating solids and dissolved inorganic solids ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Facultative bacteria are able to work in Presence of oxygen only Presence as well as in absence of oxygen Presence of water Absence of oxygen only Presence of oxygen only Presence as well as in absence of oxygen Presence of water Absence of oxygen only ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The minimum and maximum diameters of sewers shall preferably be 15 cm and 300 cm 15 cm and 100 cm 30 cm and 450 cm 60 cm and 300 cm 15 cm and 300 cm 15 cm and 100 cm 30 cm and 450 cm 60 cm and 300 cm ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The amount of coagulant needed for coagulation of water increases with (i) Increase in turbidity of water (ii) Decrease in turbidity of water (iii) Increase in temperature of water (iv) Decrease in temperature of water The correct answer is (i) and (ii) (ii) and (iv) (ii) and (iii) (i)and(iv) (i) and (ii) (ii) and (iv) (ii) and (iii) (i)and(iv) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The maximum efficiency of BOD removal is achieved in Aerated lagoons Oxidation ditch Oxidation pond Trickling filters Aerated lagoons Oxidation ditch Oxidation pond Trickling filters ANSWER DOWNLOAD EXAMIANS APP
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