Environmental Engineering in CE Insufficient washing of sand grains in a rapid sand filter causes Shrinkage of filtering media Mud balls Air binding Expansion of filtering media Shrinkage of filtering media Mud balls Air binding Expansion of filtering media ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Noise pollution level in a chemical plant is expressed in Decibel Hertz None of these Roentgen Decibel Hertz None of these Roentgen ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Scale formation in boiler is controlled by Eliminating H₂S in feed water Keeping the pH value of feed water just below 7 Reduction in hardness, silica & alumina in feed water Preheating of feed water Eliminating H₂S in feed water Keeping the pH value of feed water just below 7 Reduction in hardness, silica & alumina in feed water Preheating of feed water ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The type of bacteria which is active in trickling filter during biological treatment of sewage is the __________ bacteria. Anaerobic Parasitic Saphrophytic Aerobic Anaerobic Parasitic Saphrophytic Aerobic ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The destruction of water-borne pathogens is termed as disinfection of water. Which of the following is a water disinfectant? Benzene hexachloride Alkalis Alkyl benzene sulphonate (ABS) Chlorine Benzene hexachloride Alkalis Alkyl benzene sulphonate (ABS) Chlorine ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is a secondary air pollutant? Photochemical smog Nitrogen dioxide Dust particles Sulphur dioxide Photochemical smog Nitrogen dioxide Dust particles Sulphur dioxide ANSWER DOWNLOAD EXAMIANS APP
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