Environmental Engineering in CE Biological oxidation ponds remove organic matters present in the polluted water by Both A & B Aerobic oxidation Using the activities of bacteria and other micro organisms Neither A nor B Both A & B Aerobic oxidation Using the activities of bacteria and other micro organisms Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE For existence of aquatic life in water, the dissolved oxygen content in it, should not be less than __________ ppm. 1000 5 500 10000 1000 5 500 10000 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE COD of raw municipal sewage may be in the range of about __________ mg/litre. 1500-2500 1-2 90-120 5-10 1500-2500 1-2 90-120 5-10 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is a manmade source of air pollution? Automobile exhaust Forest fire Bacterial action in soil and swamp areas All of these Automobile exhaust Forest fire Bacterial action in soil and swamp areas All of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following acts as a natural source of air pollution? Deforestation None of these Volcanic eruption Forest fire Deforestation None of these Volcanic eruption Forest fire ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Ionisation potential employed in the industrial electrostatic precipitator is of the order of 230 V AC 230 V DC 30 to 70 kV DC 30 to 70 kV AC 230 V AC 230 V DC 30 to 70 kV DC 30 to 70 kV AC ANSWER DOWNLOAD EXAMIANS APP
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