Environmental Engineering Which of the following chemical compounds can be used for de-chlorination of water? Sulphur dioxide Carbon dioxide Chloramines Bleaching powder Sulphur dioxide Carbon dioxide Chloramines Bleaching powder ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Settling velocity increases with Depth of tank Size of particles Specific gravity of solid particles Temperature of liquid Depth of tank Size of particles Specific gravity of solid particles Temperature of liquid 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 1 ppm 40 ppm 10 ppm 4 ppm 1 ppm 40 ppm 10 ppm 4 ppm 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 (ii) (i) and (iv) (ii) and (iv) (ii) and (iii) (i) and (ii) (i) and (iv) (ii) and (iv) (ii) and (iii) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The chemical most commonly used to increase speed of sedimentation of sewage is Copper sulphate Lime Sulphuric acid Sodium permanganate Copper sulphate Lime Sulphuric acid Sodium permanganate ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The most common cause of acidity in water is Oxygen Carbon dioxide Nitrogen Hydrogen Oxygen Carbon dioxide Nitrogen Hydrogen ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS