A. Silica
B. Dissolved oxygen
C. Suspended salt
D. Dissolved salt
Related Mcqs:
- Widely used method for the conditioning of boiler feed water is the ___________________?
A. Cold lime process
B. Coagulation
C. Hot-lime soda process
D. Sequestration - The most widely used coagulant for removing suspended impurities from water is__________________?
A. Bleaching powder
B. Chlorine
C. Calcium sulphate
D. Alum - Very fine suspended and colloidal impurities are removed from water by a process called___________________?
A. Sedimentation
B. Coagulation
C. Disinfection
D. Softening - Most widely and commonly used coagulant for the removal of suspended impurities in water is __________________?
A. Bleaching powder
B. Slaked lime
C. Alum
D. Copper sulphate - Impurities present in brine is normally removed by treatment with ?
A. NH3 and CO2
B. Lime and soda ash
C. Lime, ammonia and carbon
D. All A , B. and C. - Separation of fresh water from sea water can be done by the _______________ operation ?
A. Osmosis
B. Reverse osmosis
C. Absorption
D. Adsorption - Zeolite removes both temporary as well as permanent hardness of water by precipitating calcium and magnesium present in water as insoluble zeolites. Used zeolite is regenerated by flushing with the solution of_____________________?
A. Calcium sulphate
B. Sodium chloride
C. Sodium sulphate
D. Magnesium chloride - Which of the following is not produced commercially from sea water ?
A. Magnesium & potassium compounds
B. Common salt
C. Bromine
D. Iodine - Which of the following is not responsible for causing permanent hardness of water ?
A. Ca(HCO3)2
B. CaCl2
C. MgCl2
D. None of these - Which of the following is not produced on commercial scale from sea water ?
A. Bromine
B. Magnesium compounds
C. Potassium compounds
D. Sodium sulphate
