Environmental Engineering 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 filters The correct answer is (i) and (iv) (ii) and (iv) (i) and (ii) (ii) and (iii) (i) and (iv) (ii) and (iv) (i) and (ii) (ii) and (iii) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The settling velocity of a particle in a sedimentation tank increases if The depth of tank is decreased The surface area of tank is increased Particle size is decreased None of these The depth of tank is decreased The surface area of tank is increased Particle size is decreased None of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The means of access for inspection and cleaning of sewer line is known as Catch basin Drop manhole Manhole Inlet Catch basin Drop manhole Manhole Inlet ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The gas from sludge digestion tank is mainly composed of Methane Hydrogen sulphide Nitrogen Carbon dioxide Methane Hydrogen sulphide Nitrogen Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Standard EDTA (ethylene diamine tetra acetic acid) solution is used to determine the Dissolved oxygen in water Turbidity in water Hardness in water Residual chlorine in water Dissolved oxygen in water Turbidity in water Hardness in water Residual chlorine in water ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Orthotolidine test is used for determination of Dissolved oxygen Biochemical oxygen demand Residual chlorine Dose of coagulant Dissolved oxygen Biochemical oxygen demand Residual chlorine Dose of coagulant ANSWER DOWNLOAD EXAMIANS APP
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