Zeolite used in water softening process (cation exchange) is regenerated by washing with___________________?

Related Mcqs:

1. 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

2. Cation exchanger is regenerated usually with_________________________?

   A. NaOH
   B. H2SO4
   C. Hydrazine
   D. Alum solution

3. Zeolite is used in the ____________________ ?

   A. Water treatment
   B. Glass manufacture
   C. Hydrogenation of fatty oil as a catalyst
   D. Development of exposed photographic plate

4. Zeolite is a/an___________________?

   A. Naturally occuring clay which is capable of exchanging cations
   B. Abrasive material
   C. Catalyst used in shift conversion
   D. None of these

5. Anion exchanger is regenerated usually with ____________________?

   A. NaOH
   B. H2SO4
   C. Hydrazine
   D. Alum solution

6. Washing soda is chemically represented by _________________?

   A. Na2CO3
   B. Na2CO3.H2O
   C. Na2CO3.10H2O
   D. NaHCO3

7. Setting of plaster of Paris is accompanied with___________________?

   A. Hydration
   B. Dehydration
   C. Hydrolysis
   D. Loss of CO2

8. Solvay process as compared to dual process (i.e. modified Solvay process) ?

   A. Can use low grade brine
   B. Has less corrosion problems
   C. Involves higher investment in NH3 recovery units than that for crystallisation units for NH4Cl
   D. Both B. and C.

9. Separation of fresh water from sea water can be done by the _______________ operation ?

   A. Osmosis
   B. Reverse osmosis
   C. Absorption
   D. Adsorption

10. Very fine suspended and colloidal impurities are removed from water by a process called___________________?

    A. Sedimentation
    B. Coagulation
    C. Disinfection
    D. Softening