Environmental Engineering Double filtration is used To increase the filtration rapid sand filters capacity of To increase the filtration slow sand filters capacity of All of these For isolated buildings like pools, hotels etc swimming To increase the filtration rapid sand filters capacity of To increase the filtration slow sand filters capacity of All of these For isolated buildings like pools, hotels etc swimming ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The hourly variation factor is usually taken as 1.5 2.7 2.0 1.8 1.5 2.7 2.0 1.8 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Disinfection of water results in Removal of turbidity Killing of disease bacteria Complete sterilisation Removal of hardness Removal of turbidity Killing of disease bacteria Complete sterilisation Removal of hardness ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Chlorine demand of water is equal to Difference of applied and residual chlorine Sum of applied and residual chlorine Applied chlorine Residual chlorine Difference of applied and residual chlorine Sum of applied and residual chlorine Applied chlorine Residual chlorine ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering As compared to rapid sand filters, slow sand filters give (i) Slower filtration rate (ii) Higher filtration rate (iii) Lesser efficiency in removal of bacteria (iv) Higher efficiency in removal of bacteria The correct answer is (ii) and (iii) (i) and (iv) (i) and (ii) (ii) and (iv) (ii) and (iii) (i) and (iv) (i) and (ii) (ii) and (iv) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering If the sewage contains grease and fatty oils, these are removed in Skimming tanks Sedimentation tanks Grit chambers Detritus tanks Skimming tanks Sedimentation tanks Grit chambers Detritus tanks ANSWER DOWNLOAD EXAMIANS APP
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