Chemical Process Exothermic condensation reaction of monochlorobenzene with chloral in presence of 20% oleum as catalyst produces DDT. The reaction temperature is maintained at __________ °C. 15-30 250-300 90-100 15-30 250-300 90-100 ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Bleaching powder (chemically known as calcium chloro hypochlorite) is commercially produced by the action of chlorine on Soda lime Slaked lime Calcium perchlorate None of these Soda lime Slaked lime Calcium perchlorate None of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Process __________ is an ore concentrating metallurgical process involving a chemical change. None of these Electromagnetic separation Roasting Froth floatation None of these Electromagnetic separation Roasting Froth floatation ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Gypsum is chemically Sodium sulphate Potassium sulphate Calcium sulphate Calcium chloride Sodium sulphate Potassium sulphate Calcium sulphate Calcium chloride ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Gelatine which is a nitrogenous organic protein is obtained by the hydrolysis of Molasses Callagen Carbohydrate Tannin Molasses Callagen Carbohydrate Tannin ANSWER DOWNLOAD EXAMIANS APP
Chemical Process __________ glass has the lowest co-efficient of thermal expansion and hence is more heat resistant. Soda lime Lead Pyrex High silica Soda lime Lead Pyrex High silica ANSWER DOWNLOAD EXAMIANS APP
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