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 Frasch process is for Making oxygen Producing helium Mining sulphur Making nitrogen Making oxygen Producing helium Mining sulphur Making nitrogen ANSWER DOWNLOAD EXAMIANS APP
Chemical Process High magnesia lime is added to hot sugar cane juice (during the manufacture of sugar) to Neither A nor B Facilitate fast filtration Flocculate the impurities Both A and B Neither A nor B Facilitate fast filtration Flocculate the impurities Both A and B ANSWER DOWNLOAD EXAMIANS APP
Chemical Process The compressive strength of cement should not be less than about 110Kg/cm² after three days & not less than 170Kg/cm² after seven days. The fineness of an ordinary cement as determined by turbidimetric method should be about __________ cm²/gm. 4000 8500 800 1600 4000 8500 800 1600 ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Calcination of gypsum produces Lime Salt cake Nitre cake Plaster of paris Lime Salt cake Nitre cake Plaster of paris ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Which of the following is not a food additive? Ammonium chloride Benzoyl peroxide Invertage Citric acid Ammonium chloride Benzoyl peroxide Invertage Citric acid ANSWER DOWNLOAD EXAMIANS APP
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