Environmental Engineering Alum as a coagulant is found to be most effective when pH range of water is 6 to 8 8 to 10 4 to 6 2 to 4 6 to 8 8 to 10 4 to 6 2 to 4 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Which of the following is not a water borne disease? Cholera Malaria Dysentery Typhoid Cholera Malaria Dysentery Typhoid ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The settling velocity of a particle in a sedimentation tank depends on Both depth and surface area of tank Surface area of tank None of these Depth of tank Both depth and surface area of tank Surface area of tank None of these Depth of tank 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 10 mg/liter 100 mg/liter 1 mg/liter 1000 mg/liter 10 mg/liter 100 mg/liter 1 mg/liter ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The type of valve which is provided to control the flow of water in the distribution system at street corners and where the pipe lines intersect is Check valve Safety valve Scour valve Sluice valve Check valve Safety valve Scour valve Sluice valve ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The self cleansing velocity for all sewers in India is usually 1.0 m/sec to 1.2 m/sec 1.5 m/sec to 2.0 m/sec 3.0 m/sec to 3.5 m/sec Less than 1.0 m/sec 1.0 m/sec to 1.2 m/sec 1.5 m/sec to 2.0 m/sec 3.0 m/sec to 3.5 m/sec Less than 1.0 m/sec ANSWER DOWNLOAD EXAMIANS APP
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