Alum [Al2(SO4)3] is used as a coagulant in water treatment to remove____________________?

Related Mcqs:

1. Which of the following is used as a coagulant in water treatment ?

   A. Chloramine
   B. Chlorine
   C. Ferrous sulphate
   D. Hydrogen peroxide

2. The most widely used coagulant for removing suspended impurities from water is__________________?

   A. Bleaching powder
   B. Chlorine
   C. Calcium sulphate
   D. Alum

3. Which of the following is used as a coagulant in treating turbid water ?

   A. Chlorine
   B. Ferric sulphate
   C. Calcium sulphate
   D. Activated carbon

4. 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

5. Starting raw material for the manufacture of alum is_________________?

   A. Alumina
   B. Gypsum
   C. Bauxite
   D. Ammonium bicarbonate

6. Alum is commercially produced from___________________?

   A. Gypsum
   B. Feldspar
   C. Galena
   D. Bauxite

7. Chemical name of ‘alum’ is__________________?

   A. Barium sulphate
   B. Aluminium sulphate
   C. Aluminium chloride
   D. Calcium sulphate

8. Coagulant is used _________________ filtration?

   A. Before
   B. After
   C. During
   D. To avoid

9. The main use of activated carbon in water treatment is to control ___________________?

   A. Bacterial growth
   B. Taste and odour
   C. Turbidity
   D. None of these

10. Deaeration of water in its treatment is necessary, as it___________________?

    A. Minimises its turbidity
    B. Helps in controlling its taste and odour
    C. Minimises its corrosiveness
    D. None of these