A. Bleaching powder
B. Chlorine
C. Calcium sulphate
D. Alum
Related Mcqs:
- 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 - Very fine suspended and colloidal impurities are removed from water by a process called___________________?
A. Sedimentation
B. Coagulation
C. Disinfection
D. Softening - Which of the following impurities in feed water for high pressure boiler is the most detrimental ?
A. Silica
B. Dissolved oxygen
C. Suspended salt
D. Dissolved salt - Alum [Al2(SO4)3] is used as a coagulant in water treatment to remove____________________?
A. Colour
B. Turbidity
C. Bacteria
D. All A , B. and C. - Which of the following is used as a coagulant in water treatment ?
A. Chloramine
B. Chlorine
C. Ferrous sulphate
D. Hydrogen peroxide - Which of the following is used as a coagulant in treating turbid water ?
A. Chlorine
B. Ferric sulphate
C. Calcium sulphate
D. Activated carbon - 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. - Coagulant is used _________________ filtration?
A. Before
B. After
C. During
D. To avoid - 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 - 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
