Environmental Engineering in CE Which of the following is not a weightless pollutant? Noise pollution SPM Thermal pollution Radioactive rays Noise pollution SPM Thermal pollution Radioactive rays ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE __________ substances present in sewage are removed in grit chamber during sewage treatment. Inorganic Dissolved Organic Fatty Inorganic Dissolved Organic Fatty ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The function of skimming tank in sewage treatment is to remove __________ substances. Oil & fatty Dissolved solid Suspended solid Gritty & inorganic Oil & fatty Dissolved solid Suspended solid Gritty & inorganic ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following plants does not emit appreciable amount of SO₂ in atmosphere? Nitric acid plant Petroleum refinery Sulphuric acid plant Thermal power plant Nitric acid plant Petroleum refinery Sulphuric acid plant Thermal power plant ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE In a sedimentation tank, the detention period for water ranges from __________ hours. 2 to 4 16 to 20 24 to 32 8 to 12 2 to 4 16 to 20 24 to 32 8 to 12 ANSWER DOWNLOAD EXAMIANS APP
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
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