Environmental Engineering The effective size of sand particles used in slow sand filters is 0.25 to 0.35 mm 0.35 to 0.60 mm 0.60 to 1.00 mm 1.00 to 1.80 mm 0.25 to 0.35 mm 0.35 to 0.60 mm 0.60 to 1.00 mm 1.00 to 1.80 mm ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Chlorine demand of water is equal to Sum of applied and residual chlorine Difference of applied and residual chlorine Residual chlorine Applied chlorine Sum of applied and residual chlorine Difference of applied and residual chlorine Residual chlorine Applied chlorine ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Which of the following compounds is widely used for algae control? Sodium chloride Sodium sulphate Calcium chloride Copper sulphate Sodium chloride Sodium sulphate Calcium chloride Copper sulphate ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering If the time of concentration is 9 minutes, then the intensity of rainfall according to British Ministry of Health formula will be 20 mm/hr 40 mm/hr 4 mm/hr 10 mm/hr 20 mm/hr 40 mm/hr 4 mm/hr 10 mm/hr ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Hardy cross method of analysis of distribution system (i) Involves successive trials (ii) Takes economic aspects into account (iii) Is time consuming All are correct (i) and (iii) (i) and (ii) Only (i) All are correct (i) and (iii) (i) and (ii) Only (i) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Facultative bacteria are able to work in Presence of oxygen only Presence of water Absence of oxygen only Presence as well as in absence of oxygen Presence of oxygen only Presence of water Absence of oxygen only Presence as well as in absence of oxygen ANSWER DOWNLOAD EXAMIANS APP
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