Environmental Engineering The disinfection efficiency of chlorine increases by (i) Decreasing the time of contact (ii) Decreasing the temperature of water (iii) Increasing the temperature of water Only (iii) Both (i) and (iii) Both (i) and (ii) Only (i) Only (iii) Both (i) and (iii) Both (i) and (ii) Only (i) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The main disadvantage of cement concrete sewers is Difficulty in transportation due to heavy weight Less life Less strength Difficulty in construction Difficulty in transportation due to heavy weight Less life Less strength Difficulty in construction ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The devices which are installed for drawing water from the sources are called Filters Aquiclude Intakes Aquifers Filters Aquiclude Intakes Aquifers ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Sludge volume index is defined as the ratio of Percentage of suspended solids by weight to percentage of sludge by volume Percentage of total solids by weight to percentage of sludge by volume Percentage of sludge by volume to percentage of suspended solids by weight Percentage of sludge by volume to percentage of total solids by weight Percentage of suspended solids by weight to percentage of sludge by volume Percentage of total solids by weight to percentage of sludge by volume Percentage of sludge by volume to percentage of suspended solids by weight Percentage of sludge by volume to percentage of total solids by weight ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The phenolic compounds in public water supply should not be more than 0.1 ppm 0.001 ppm 0.0001 ppm 0.01 ppm 0.1 ppm 0.001 ppm 0.0001 ppm 0.01 ppm ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Percentage of bacterial load that can be removed from water by the process of plain sedimentation is about 100 75 50 59 100 75 50 59 ANSWER DOWNLOAD EXAMIANS APP
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