Chemical Process Phosphoric acid is prepared from Rock phosphate Cryolite Chalcopyrite None of these Rock phosphate Cryolite Chalcopyrite None of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Process The temperature in the calcium carbide furnace is __________ °C. 4000-4500 200-300 700-850 2000-2200 4000-4500 200-300 700-850 2000-2200 ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Very fine suspended and colloidal impurities are removed from water by a process called Sedimentation Coagulation Softening Disinfection Sedimentation Coagulation Softening Disinfection ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Temporary hardness of water can be removed by Boiling Addition of alum (a coagulant) Filtration (through gravity sand filter) Addition of lime Boiling Addition of alum (a coagulant) Filtration (through gravity sand filter) Addition of lime ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Which of the following may be viewed as a catalyst in the manufacture of soda ash by Solvay process? NH? CaO NaCl Coke NH? CaO NaCl Coke ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Use of water having dissolved oxygen in boilers promotes Sequestration None of these Scale formation Corrosion Sequestration None of these Scale formation Corrosion ANSWER DOWNLOAD EXAMIANS APP
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