A. Bleaching powder
B. Slaked lime
C. Alum
D. Copper sulphate
Related Mcqs:
- 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 - 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 - Hydrazine is used in water treatment for the removal of___________________?
A. Colloidal impurities
B. Dissolved oxygen
C. Turbidity
D. Chlorinous taste
