Chemical Process Iron ore hametite is concentrated using Gravity separation Froth floatation Roasting Electro magnetic separation mainly Gravity separation Froth floatation Roasting Electro magnetic separation mainly ANSWER DOWNLOAD EXAMIANS APP
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. 90-100 15-30 250-300 90-100 15-30 250-300 ANSWER DOWNLOAD EXAMIANS APP
Chemical Process White phosphorous is stored under water, because It is unstable It does not react with water It is poisonous Its kindling temperature in dry air is very low It is unstable It does not react with water It is poisonous Its kindling temperature in dry air is very low ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Calcination of gypsum produces Plaster of paris Salt cake Lime Nitre cake Plaster of paris Salt cake Lime Nitre cake ANSWER DOWNLOAD EXAMIANS APP
Chemical Process The difference between saponification value and acid value is None of these Called ester value Always negative Constant for all fatty oils None of these Called ester value Always negative Constant for all fatty oils ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Roasting of metallurgical ores is done mainly to Remove CO₂ & H₂O Sinter the ore Remove arsenic & sulphur Dehydrate it Remove CO₂ & H₂O Sinter the ore Remove arsenic & sulphur Dehydrate it ANSWER DOWNLOAD EXAMIANS APP
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