Environmental Engineering in CE Lagoons used for purification of polluted water All of these Gives an excellent final effluent (with 3 to 4 lagoons arranged in series) having suspended solid < 1 mg/litre and BOD = 3.8 mg/litre Use micro-organisms/bacteria in presence of dissolved oxygen Are large shallow artificial lakes also known as clarification lakes, maturation ponds or oxidation ponds All of these Gives an excellent final effluent (with 3 to 4 lagoons arranged in series) having suspended solid < 1 mg/litre and BOD = 3.8 mg/litre Use micro-organisms/bacteria in presence of dissolved oxygen Are large shallow artificial lakes also known as clarification lakes, maturation ponds or oxidation ponds ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Insufficient washing of sand grains in a rapid sand filter causes Expansion of filtering media Shrinkage of filtering media Mud balls Air binding Expansion of filtering media Shrinkage of filtering media Mud balls Air binding ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Black smoke coming out of the chimney of a furnace is an indication of the use of __________ in the furnace. Pulverised coal as fuel Low amount of excess combustion air Large quantity of excess combustion air Hydrocarbon fuel Pulverised coal as fuel Low amount of excess combustion air Large quantity of excess combustion air Hydrocarbon fuel ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE __________ can not control the noise pollution. Use of silencers Tree plantation Vibration damping Green house gases Use of silencers Tree plantation Vibration damping Green house gases ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Sooty and sulphurous smog formed due to combustion of fossil fuels particularly in winter, continues throughout the day and night. When the moist atmospheric air's water vapor condenses on the solid particles of smoke thereby forming smog (smoke + fog), it causes Respiratory trouble All of these Poor visibility due to sky darkening Irritation in eyes Respiratory trouble All of these Poor visibility due to sky darkening Irritation in eyes ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Global warming may result in Flood Decrease in food productivity Cyclone All of these Flood Decrease in food productivity Cyclone All of these ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS