Environmental Engineering in CE Which is the most widely used coagulant for the treatment of turbid water? Alum (aluminium sulphate) Sodium aluminate Lime Ferric chloride Alum (aluminium sulphate) Sodium aluminate Lime Ferric chloride 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? Circular clarifier Sedimentation tank Chemical coagulation Mechanical flocculation Circular clarifier Sedimentation tank Chemical coagulation Mechanical flocculation ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Aerosols present in atmospheric air may be Neutral Positively charged Negatively charged Combination of all A, B & C Neutral Positively charged Negatively charged Combination of all A, B & C ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Replenishment of dissolved oxygen in water stream polluted with industrial waste occurs by Natural aeration of water stream Neither A nor B Both A & B Photosynthetic action of algae Natural aeration of water stream Neither A nor B Both A & B Photosynthetic action of algae ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Waste/polluted water discharged from electroplating, blast furnace and coal mining industries contain mainly __________ substances. Organic Radioactive Inorganic None of these Organic Radioactive Inorganic None of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Iron & manganese present as pollutant in water can not be removed by Oxidation followed by settling & filtration Chlorination Lime soda process or manganese zeolite process Ion exchange process Oxidation followed by settling & filtration Chlorination Lime soda process or manganese zeolite process Ion exchange process ANSWER DOWNLOAD EXAMIANS APP
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