Chemical Process Pick out the false statement pertaining to water treatment. Aeration of water is effective in CO₂ removal Water with pH value less than 7, is acidic The zeolite water softening process reduces the hardness of water by not more than 50% Sodium sulphate or sodium carbonate do not cause hardness in water Aeration of water is effective in CO₂ removal Water with pH value less than 7, is acidic The zeolite water softening process reduces the hardness of water by not more than 50% Sodium sulphate or sodium carbonate do not cause hardness in water ANSWER DOWNLOAD EXAMIANS APP
Chemical Process The main aim behind cooling the digested chip at the bottom portion of the digestor by injecting cold black liquor is to Avoid mechanical weakening of fibre Remove lignin by way of crystallisation Increase the cellulose content None of these Avoid mechanical weakening of fibre Remove lignin by way of crystallisation Increase the cellulose content None of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Temporary hardness of water can be removed by Boiling Filtration (through gravity sand filter) Addition of lime Addition of alum (a coagulant) Boiling Filtration (through gravity sand filter) Addition of lime Addition of alum (a coagulant) ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Which of the following is a detergent? Benzene hexachloride Polytetraflouroethylene Cellulose nitrate Alkyl benzene sulphonate Benzene hexachloride Polytetraflouroethylene Cellulose nitrate Alkyl benzene sulphonate ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Triple superphosphate is manufactured by reacting Ammonium phosphate with phosphoric acid Phosphate rock with phosphoric acid Phosphate rock with sulphuric acid Phosphate rock with nitric acid Ammonium phosphate with phosphoric acid Phosphate rock with phosphoric acid Phosphate rock with sulphuric acid Phosphate rock with nitric acid ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Oils and fats are converted to soap in a process called Hydrogenation None of these Saponification Esterification Hydrogenation None of these Saponification Esterification ANSWER DOWNLOAD EXAMIANS APP
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