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 (ii) and (iv) (ii) and (iii) (i) and (iv) (i) and (ii) (ii) and (iv) (ii) and (iii) (i) and (iv) (i) and (ii) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The minimum dissolved oxygen which should always be present in water in order to save the aquatic life is 40 ppm 1 ppm 4 ppm 10 ppm 40 ppm 1 ppm 4 ppm 10 ppm ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Assertion A: Slow sand filters are more efficient in removal of bacteria than rapid sand filters.Reason R: The sand used in slow sand filters is finer than that in rapid sand filtersSelect your answer based on the coding system given below: Both A and R is true and R is the correct explanation of A A is false but R is true Both A and R is true but R is not the correct explanation of A A is true but R is false Both A and R is true and R is the correct explanation of A A is false but R is true Both A and R is true but R is not the correct explanation of A A is true but R is false ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Settling velocity increases with Depth of tank Size of particles Temperature of liquid Specific gravity of solid particles Depth of tank Size of particles Temperature of liquid Specific gravity of solid particles ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The detention period for oxidation ponds is usually kept as 10 to 15 days 3 months 48 hours 24 hours 10 to 15 days 3 months 48 hours 24 hours ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The minimum and maximum diameters of sewers shall preferably be 60 cm and 300 cm 30 cm and 450 cm 15 cm and 100 cm 15 cm and 300 cm 60 cm and 300 cm 30 cm and 450 cm 15 cm and 100 cm 15 cm and 300 cm ANSWER DOWNLOAD EXAMIANS APP
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