Environmental Engineering The main disadvantage of cement concrete sewers is Difficulty in construction Less strength Difficulty in transportation due to heavy weight Less life Difficulty in construction Less strength Difficulty in transportation due to heavy weight Less life ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering As compared to higher pH values, the contact period required for efficient chlorination at lower pH values is Larger None of these Same Smaller Larger None of these Same Smaller ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The rate of BOD exerted at any time is Directly proportional to BOD satisfied Inversely proportional to BOD remaining Inversely proportional to BOD satisfied Directly proportional to BOD remaining Directly proportional to BOD satisfied Inversely proportional to BOD remaining Inversely proportional to BOD satisfied Directly proportional to BOD remaining ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering A sewer that receives the discharge of a number of house sewers is called Sub-main sewer Intercepting sewer House sewer Lateral sewer Sub-main sewer Intercepting sewer House sewer Lateral sewer ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The design discharge for the separate sewer system shall be taken as 2 × DWF 6 × DWF Equal to dry weather flow (DWF) 3 × DWF 2 × DWF 6 × DWF Equal to dry weather flow (DWF) 3 × DWF 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
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