Environmental Engineering The detention period in coagulation tanks is usually kept as 1 to 2 minutes 2 to 6 hours 2 to 6 days 30 to 45 minutes 1 to 2 minutes 2 to 6 hours 2 to 6 days 30 to 45 minutes ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The type of valve which allows water to flow in one direction but prevents its flow in the reverse direction is Sluice valve Reflux valve Pressure relief valve Air relief valve Sluice valve Reflux valve Pressure relief valve Air relief valve ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Residual chlorine in water is determined by Orthotolidine method Both (A) and (B) Starch iodide method None of these Orthotolidine method Both (A) and (B) Starch iodide method None of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Percentage of bacterial load that can be removed from water by the process of plain sedimentation is about 75 100 50 59 75 100 50 59 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Orthotolidine test is used for determination of Biochemical oxygen demand Dissolved oxygen Dose of coagulant Residual chlorine Biochemical oxygen demand Dissolved oxygen Dose of coagulant Residual chlorine ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The suitable system of sanitation for area of distributed rainfall throughout the year with less intensity is Combined system Partially combined system Partially separate system Separate system Combined system Partially combined system Partially separate system Separate system ANSWER DOWNLOAD EXAMIANS APP
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