Chemical Process Presence of carbonaceous matter in the sewage Reduces sulphate ions to sulphides causing obnoxious smell All of these Increases the quantity of chlorine used for its purification Causes reduction in its dissolved oxygen content thereby endangering the life of aquatic creatures Reduces sulphate ions to sulphides causing obnoxious smell All of these Increases the quantity of chlorine used for its purification Causes reduction in its dissolved oxygen content thereby endangering the life of aquatic creatures ANSWER DOWNLOAD EXAMIANS APP
Chemical Process __________ is the major constituent of the Portland cement. Calcium carbonate Calcium oxide Calcium sulphate Tricalcium silicate Calcium carbonate Calcium oxide Calcium sulphate Tricalcium silicate ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Enzymes are organic catalysts used in the __________ reactions. Chemical Electrochemical Photochemical Biochemical Chemical Electrochemical Photochemical Biochemical ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Very dilute solutions are generally used in fermentation reactions for which the optimum temperature range is __________ °C. 5 to 10 -5 to 0 30 to 50 75 to 80 5 to 10 -5 to 0 30 to 50 75 to 80 ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Pick out the true statement pertaining to water treatment. Activated carbon can be used for taste & odour control without subsequent filtration Normally, the turbidity is removed by adding a coagulent prior to sedimentation Slow sand filters can remove colour completely Application of activated carbon reduces the temporary hardness of water Activated carbon can be used for taste & odour control without subsequent filtration Normally, the turbidity is removed by adding a coagulent prior to sedimentation Slow sand filters can remove colour completely Application of activated carbon reduces the temporary hardness of water ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Carbon disulphide is mainly used in the production of Viscose rayon Paints Plasticiser for unsaturated polyester Corundum Viscose rayon Paints Plasticiser for unsaturated polyester Corundum ANSWER DOWNLOAD EXAMIANS APP
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