Soap cannot be used with hard water, because

A. Hard water contains sulphate

B. They form insoluble calcium soaps which precipitate

C. They attract back the removed dirt

D. None of these

Please do not use chat terms. Example: avoid using "grt" instead of "great".

You can do it
  1. Sulphur addition in soap is done to
  2. Pick out the wrong statement.
  3. Highly porous refractory bricks are
  4. Dichloro diphenyl __________ is the full form of DDT (an insecticide).
  5. Insulin is an __________ drug.
  6. Hollander beater used during paper pulp manufacture does not facilitate the __________ of fibre.
  7. Low purity oxygen is used for
  8. Sugar content in sugarcane on cane basis is about __________ percent by weight.
  9. Catalyst used in the hydrogenation of oil is
  10. Glauber's salt is chemically represented by
  11. Which of the following is an explosive?
  12. Raw materials used for producing __________ cement does not contain iron oxide.
  13. DDT stands for
  14. Pick out the wrong statement pertaining to nitric acid.
  15. Manufacture of phthalic anhydride uses __________ as a catalyst.
  16. Penicillin, an antibiotic drug was discovered by
  17. Plasticisers are added to paints to
  18. The main use of HCl is in the
  19. White phosphorous is stored under water, because
  20. __________ process is used for the commercial production of nitric acid by the catalytic oxidation of…
  21. Catalytic oxidation-dehydrogenation of methyl alcohol produces
  22. Carboxymethyl cellulose (CMC) is added in detergents to
  23. Solvay process is not used for the manufacture of potassium carbonate, because of the reason that potassium…
  24. Alcohol percentage in molasses may be around
  25. 20% oleum means that in 100 kg oleum, there are 20 kg of
  26. Riboflavin is a/an
  27. Which of the following processes can remove both temporary as well as permanent hardness of water?
  28. Massecuite is
  29. The product obtained on mixing calcium oxide with water is called
  30. Brackish water which contains mostly dissolved salt, can be purified by the __________ process.