Chemical Process Temporary hardness of water can be removed by Boiling Filtration (through gravity sand filter) Addition of alum (a coagulant) Addition of lime Boiling Filtration (through gravity sand filter) Addition of alum (a coagulant) Addition of lime ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Ethylene oxide is produced by oxidation of ethylene in presence of AgO catalyst at 5 atm & 275°C 50 atm & 1000°C 1 atm & 100°C 100 atm & 500°C 5 atm & 275°C 50 atm & 1000°C 1 atm & 100°C 100 atm & 500°C ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Raw materials used for producing __________ cement does not contain iron oxide. Pozzolan Waterproof White Slag Pozzolan Waterproof White Slag ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Low purity oxygen is used for L.D. steel making Medicinal purposes Chemical oxidation processes Cutting and welding of metals L.D. steel making Medicinal purposes Chemical oxidation processes Cutting and welding of metals ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Liquefaction of gases can not be done by Adiabatic expansion against a piston or in a turbine Merely compressing it beyond critical pressure Exchange of heat with colder stream Adiabatic expansion through a throttle valve (Joule-Thomson expansion) Adiabatic expansion against a piston or in a turbine Merely compressing it beyond critical pressure Exchange of heat with colder stream Adiabatic expansion through a throttle valve (Joule-Thomson expansion) 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. 800 8500 1600 4000 800 8500 1600 4000 ANSWER DOWNLOAD EXAMIANS APP
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