Environmental Engineering The rate of filtration in slow sand filters in million litres per day per hectare is about 500 to 600 50 to 60 1400 to 1500 100 to 150 500 to 600 50 to 60 1400 to 1500 100 to 150 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 Pressure relief valve Sluice valve Reflux valve Air relief valve Pressure relief valve Sluice valve Reflux valve Air relief valve ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering For a given discharge, the efficiency of sedimentation tank can be increased by Decreasing the surface area of tank Increasing the surface area of tank Increasing the depth of tank Decreasing the depth of tank Decreasing the surface area of tank Increasing the surface area of tank Increasing the depth of tank Decreasing the depth of tank ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Chlorine demand of water is equal to Difference of applied and residual chlorine Applied chlorine Sum of applied and residual chlorine Residual chlorine Difference of applied and residual chlorine Applied chlorine Sum of applied and residual chlorine Residual chlorine ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The suitable method of forecasting population for a young and rapidly increasing city is Incremental increase method Graphical method Arithmetical increase method Geometrical increase method Incremental increase method Graphical method Arithmetical increase method Geometrical increase method ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering As compared to higher pH values, the contact period required for efficient chlorination at lower pH values is Smaller Same None of these Larger Smaller Same None of these Larger ANSWER DOWNLOAD EXAMIANS APP
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