Environmental Engineering in CE In a sedimentation tank, the detention period for water ranges from __________ hours. 2 to 4 24 to 32 16 to 20 8 to 12 2 to 4 24 to 32 16 to 20 8 to 12 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following pollutants is absent in the emissions from a fertiliser plant ? NH₃ NO₂ CO SO₂ & SO₃ NH₃ NO₂ CO SO₂ & SO₃ ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Biological oxidation ponds remove organic matters present in the polluted water by Aerobic oxidation Neither A nor B Both A & B Using the activities of bacteria and other micro organisms Aerobic oxidation Neither A nor B Both A & B Using the activities of bacteria and other micro organisms ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which is the most widely used coagulant for the treatment of turbid water? Sodium aluminate Lime Ferric chloride Alum (aluminium sulphate) Sodium aluminate Lime Ferric chloride Alum (aluminium sulphate) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Disinfection of water is done to destroy pathogenic bacteria and thus prevent water-borne diseases. Disinfection of water may be done by the use of Ultraviolet light for irradiation of water Chlorine or its compounds All of these Ozone and iodine Ultraviolet light for irradiation of water Chlorine or its compounds All of these Ozone and iodine ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE A standard test for determination of hardness in water is termed as __________ test. Presumptive EDTA Electometric Total count Presumptive EDTA Electometric Total count ANSWER DOWNLOAD EXAMIANS APP
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