Chemical Process Use of chlorine in the treatment of sewage Causes bulking of activated sludge Aids in flocculation Increases the biological oxygen demand(BOD) Helps in grease separation Causes bulking of activated sludge Aids in flocculation Increases the biological oxygen demand(BOD) Helps in grease separation ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Dechlorination of treated water is necessary to Control taste and odour Reduce the bacterial load on filter Remove residual turbidity Remove chlorinous taste Control taste and odour Reduce the bacterial load on filter Remove residual turbidity Remove chlorinous taste ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Impurities present in brine is normally removed by treatment with All of these Lime, ammonia and carbon Lime and soda ash NH₃ and CO₂ All of these Lime, ammonia and carbon Lime and soda ash NH₃ and CO₂ ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Manufacture of phthalic anhydride uses __________ as a catalyst. Ni Cr Al₂O₃ V₂O₅ Ni Cr Al₂O₃ V₂O₅ ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Which of the following is a bleaching agent added in the detergents to facilitate removal of stains caused due to blood, tea etc? Sodium silicate Sodium borate Sodium tripolyphosphate (STPP) Caustic soda Sodium silicate Sodium borate Sodium tripolyphosphate (STPP) Caustic soda ANSWER DOWNLOAD EXAMIANS APP
Chemical Process __________ glass has the lowest co-efficient of thermal expansion and hence is more heat resistant. High silica Lead Soda lime Pyrex High silica Lead Soda lime Pyrex ANSWER DOWNLOAD EXAMIANS APP
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