Environmental Engineering in CE Oil and grease present in an emulsified state in waste water discharged from industries can be removed by Chlorination Skimming off Settling out using chemical reagents Biological oxidation Chlorination Skimming off Settling out using chemical reagents Biological oxidation ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is the most efficient for removal of very finely divided suspended solids and colloidal matter from the polluted water stream? Mechanical flocculation Chemical coagulation Sedimentation tank Circular clarifier Mechanical flocculation Chemical coagulation Sedimentation tank Circular clarifier 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. 200 140 170 120 200 140 170 120 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Noise pollution level in a chemical plant is expressed in Decibel Hertz None of these Roentgen Decibel Hertz None of these Roentgen ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Waste/polluted water discharged from electroplating, blast furnace and coal mining industries contain mainly __________ substances. Organic Inorganic Radioactive None of these Organic Inorganic Radioactive None of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE A standard test for determination of hardness in water is termed as __________ test. Electometric Total count EDTA Presumptive Electometric Total count EDTA Presumptive ANSWER DOWNLOAD EXAMIANS APP
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