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Hard water

A. Does not affect the lather formation by soap

B. Is not unfit for drinking purpose

C. Pollutes the water stream

D. All (A), (B) and (C)

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

You can do it
  1. Salt is added in the kettle during soap manufacture to separate
  2. Heating of __________ to 120°C, produces plaster of paris.
  3. Which of the following is an organometallic compound?
  4. Yellow phosphorus is transported under
  5. A unit operation is exemplified by the process of
  6. __________ paper is used in the manufacture of newsprint paper.
  7. Sucrose is a
  8. Oxidation of SO2 to SO3 is favoured by
  9. Which of the following may be viewed as a catalyst in the manufacture of soda ash by Solvay process?
  10. Molecular weight of plastics ranges from
  11. The chamber process is
  12. Very fine suspended and colloidal impurities are removed from water by a process called
  13. Gun powder, which is an explosive comprises of charcoal, sulphur and
  14. Esterification reaction
  15. Which glass is usually used in optical work?
  16. Celluloid is chemically
  17. Thermoplastic materials
  18. Commercial scale production of hydrogen from iron-steam reaction represented by, 3Fe + 3H2O = Fe3O4…
  19. Ethylene oxide is produced by oxidation of ethylene in presence of AgO catalyst at
  20. Pick out the wrong statement.
  21. Catalyst used in the manufacture of sulphuric acid by chamber & contact processes are respectively
  22. In contact process, SO3 is absorbed in 97% H2SO4 and not in water, because
  23. DDT should not be allowed to come in contact with iron (during its manufacture) to
  24. Sand and __________ is fused at 1300°C, to produce sodium silicate.
  25. Which of the following additives/water proofing agents is added to lower the hydrophilic (moisture loving)…
  26. Isopropyl benzene produced by alkylation of benzene with propylene is known as
  27. Hydrocyanic acid (HCN) is used as an insecticide for
  28. Pick out the wrong statement.
  29. The most reactive allotropic form of phosphorus is __________ phosphorus.
  30. Paper grade bamboo contains about __________ percent cellulose.