Environmental Engineering in CE The type of bacteria which is active in trickling filter during biological treatment of sewage is the __________ bacteria. Parasitic Anaerobic Aerobic Saphrophytic Parasitic Anaerobic Aerobic Saphrophytic ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE In sewage treatment, the detention period allowed for oxidation ponds ranges from __________ weeks. 15 to 20 4 to 5 1 to 2 9 to 10 15 to 20 4 to 5 1 to 2 9 to 10 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Inhalation of silica dust by human being causes Shortness of breath Asphyxiation Tuberculosis Both B & C Shortness of breath Asphyxiation Tuberculosis Both B & C ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Presence of __________ hardness is responsible for the temporary hardness in water. Choride Sulphate Carbonate Calcium Choride Sulphate Carbonate Calcium ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Noise level heard at a distance of about 100 metres from a jet engine with after burner is about __________ decibels. 120 170 140 200 120 170 140 200 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following pollutants is not emitted during volcanic eruptions? CO Hydrocarbons H₂S SO₂ CO Hydrocarbons H₂S SO₂ ANSWER DOWNLOAD EXAMIANS APP
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