Environmental Engineering in CE The average thickness of ozone layer in stratosphere is about __________ dobson unit (DU). 20 750 1500 230 20 750 1500 230 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The amount of chemical coagulant added for treatment of polluted water __________ with increase in temperature of the polluted water to be treated. Remains constant Increases May increase or decrease ; depends on the chemical characteristics of polluted water Decreases Remains constant Increases May increase or decrease ; depends on the chemical characteristics of polluted water Decreases ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Dust collection efficiency of a cyclone separator depends upon its All of these Overall height Inlet gas velocity Diameter All of these Overall height Inlet gas velocity Diameter ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Soluble silica present in boiler feed water can be removed by Filtration Preheating it Anion exchanger Coagulation Filtration Preheating it Anion exchanger Coagulation ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Biological oxidation ponds remove organic matters present in the polluted water by Using the activities of bacteria and other micro organisms Neither A nor B Aerobic oxidation Both A & B Using the activities of bacteria and other micro organisms Neither A nor B Aerobic oxidation Both A & B ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is the most detrimental for water used in high pressure boiler? Phenol Silica Turbidity Dissolved oxygen Phenol Silica Turbidity Dissolved oxygen ANSWER DOWNLOAD EXAMIANS APP
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