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Lime and soda ash are added to water to remove

A. Bicarbonates & sulphates of calcium and magnesium

B. Undesirable taste and odour

C. Bacteria

D. Its corrosiveness

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

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  1. Enzymes are organic catalysts used in the __________ reactions.
  2. Sulphur removal by heating of pyrite ore in presence of air is called its
  3. Cooking liquor in case of sulphite process is
  4. Margarine is a/an
  5. Industrial production of chloroform requires acetone and
  6. Celluloid is chemically
  7. Pick out the wrong statement.
  8. Enzymes are
  9. The temperature in the calcium carbide furnace is __________ °C.
  10. The basic constituent of vegetable oils is
  11. Main constituents of cotton fiber is
  12. Raw material used in alcohol distilleries in India is
  13. Raw materials for 'Solvay Process' for manufacture of the soda ash are
  14. Lindane is
  15. Concentration of NaOH solution produced by mercury electrolytic cell is about __________ percent.
  16. Oleum produces fumes of
  17. Bordeaux mixture is a/an
  18. Comparing sulphate process with sulphite process, we find that __________ in the later.
  19. Sucrose content in the raw juice extracted from sugar cane is about __________ percent.
  20. __________ glass is used for the manufacture of optical glass.
  21. Roasting of metallurgical ores is done mainly to
  22. Systemic insecticides
  23. A good quality coal should have
  24. Sodium chloride content in sea water is about __________ gms/litre.
  25. The most commonly used substance to speed up the sedimentation of sewage is
  26. Which form of sulphur is the most stable at room temperature?
  27. __________ acid is the main constituent of cotton seed oil.
  28. Zeolite used in water softening process (cation exchange) is regenerated by washing with
  29. Unsaturated oils compared to saturated oils have
  30. Commercial production of calcium carbide requires limestone and __________ as raw materials.