Environmental Engineering If Biochemical oxygen demand (BOD) of a town is 20000 kg/day and BOD per capita per day is 0.05 kg, then population equivalent of town is 1,00,000 4,00,000 4000 1000 1,00,000 4,00,000 4000 1000 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Cleaning is done by (i) Scraping and removal in filters slow sand (ii) Back washing in slow sand filters (iii) Scraping and removal in filters rapid sand (iv) Back washing in rapid sand filters The correct answer is (i) and (iv) (ii) and (iv) (i) and (ii) (ii) and (iii) (i) and (iv) (ii) and (iv) (i) and (ii) (ii) and (iii) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The main disadvantage of cement concrete sewers is Less life Less strength Difficulty in transportation due to heavy weight Difficulty in construction Less life Less strength Difficulty in transportation due to heavy weight Difficulty in construction ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Generally the detention period for grit chambers is kept as 12 hours 24 hours 5 minutes 1 minute 12 hours 24 hours 5 minutes 1 minute ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The specific gravity of sewage is Slightly greater than 1 Much greater than 1 Equal to 1 Slightly less than 1 Slightly greater than 1 Much greater than 1 Equal to 1 Slightly less than 1 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Double filtration is used For isolated buildings like pools, hotels etc swimming All of these To increase the filtration slow sand filters capacity of To increase the filtration rapid sand filters capacity of For isolated buildings like pools, hotels etc swimming All of these To increase the filtration slow sand filters capacity of To increase the filtration rapid sand filters capacity of ANSWER DOWNLOAD EXAMIANS APP
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