Na2CO3 is called _________________?

Related Mcqs:

1. The purpose of adding Na2CO3 to water of low alkalinity is to__________________?

   A. Permit the use of alum as a coagulant
   B. Increase the softening capacity of zeolite
   C. Facilitate easy regeneration of zeolite
   D. All A , B. and C.

2. Oils and fats are converted to soap in a process called _________________?

   A. Hydrogenation
   B. Esterification
   C. Saponification
   D. None of these

3. _________________ is produced using Polycondensation Reaction?

   A. Polythene
   B. Phenol formaldehyde
   C. Poly vinyl chloride
   D. None of these

4. The manufacture of Kraft pulp is done by a/an _________________ process?

   A. Alkaline
   B. Acidic
   C. Neutral
   D. None of these

5. Esterification reaction produces _________________?

   A. Detergent
   B. Vanaspati
   C. Soap
   D. Mercaptans

6. _________________ is not a constituent of gun powder?

   A. Carbon
   B. Charcoal
   C. Sulphur
   D. Potassium nitrate

7. Coagulant is used _________________ filtration?

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

8. Dacron is a/an _________________?

   A. Polyester
   B. Unsaturated polyester
   C. Polyamide
   D. Inorganic polymer

9. Bromine content in sea water may be around _________________ ppm?

   A. 70
   B. 640
   C. 1875
   D. 2500

10. Average sulphur content in Indian pyrites is about _________________ percent?

    A. 15
    B. 35
    C. 55
    D. 70