Most widely and commonly used coagulant for the removal of suspended impurities in water is

A. Bleaching powder

B. Slaked lime

C. Alum

D. Copper sulphate

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

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  1. Glauber's salt is chemically
  2. Finely ground calcium aluminate & silicate is a/an
  3. Polyvinyl chloride (PVC) is
  4. Which is a high grade pulp?
  5. Impurities present in brine is normally removed by treatment with
  6. Zeolite is used in the
  7. Which of the following is not a food additive?
  8. __________ process is used for the commercial production of nitric acid by the catalytic oxidation of…
  9. Flexible foam (for mattresses) is usually made of
  10. __________ are added in lacquers to remove film brittleness and to improve adhereness.
  11. Use of water having dissolved oxygen in boilers promotes
  12. In the Lurgi coal gasifier
  13. __________ of rubber decreases after its vulcanisation.
  14. Brackish water which contains mostly dissolved salt, can be purified by the __________ process.
  15. How much temperature is maintained during quicklime manufacture in the calcination zone of the vertical…
  16. Drinking (potable) water treatment does not involve
  17. The type of high refractive index glass used in optical instruments is __________ glass.
  18. Exothermic condensation reaction of monochlorobenzene with chloral in presence of 20% oleum as catalyst…
  19. The noble gas which occurs most abundantly in the atmosphere is
  20. Type of glass used in optical work is the __________ glass.
  21. Thorium is mainly used
  22. Laboratory glass wares which reacts with hydrofluoric acid, are made of the __________ glass.
  23. Catalyst used during the manufacture of 'Vanaspati Ghee' is
  24. Which of the following is a detergent?
  25. An alkali metal salt of Palmitic acid is known as
  26. Chemical name of Grignard reagent is
  27. Starting material for the commercial production of ethyl alcohol in India is
  28. Which of the following is used as a binding material in soap to improve soap texture?
  29. Catalytic oxidation-dehydrogenation of methyl alcohol produces
  30. Setting of plaster of Paris is accompanied with