Presence of H2S in raw water (to be chlorinated) results in the

A. Reduced softening capacity of zeolite

B. Increased dosage of chlorine to provide a disinfecting residual in the water

C. Easy removal of its hardness

D. None of these

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

You can do it
  1. Hydrogenation of edible vegetable oils
  2. __________ is used as a flux in the smelting of copper ore like chalcopyrite.
  3. Fat splitting catalyst is
  4. Fatty material used in soap making is
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  6. Vegetable oils contain large quantity of glycerides of unsaturated acids. When the vegetable oils contain…
  7. Permanent hardness of water can be removed by
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  9. Glauber's salt is chemically
  10. Starting raw material for the manufacture of Maleic anhydride is
  11. Chlorine gas is produced by the electrolysis of brine (NaCl solution with solid NaCl make up) in mercury…
  12. Fourdrinier machine is used in the manufacture of
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  15. Terylene is
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  17. The manufacture of Kraft pulp is done by a/an __________ process.
  18. Calgon used in water treatment is chemically
  19. __________ is used as a catalyst in fat splitting.
  20. Cement setting under water employs a/an __________ process.
  21. Solvent used for extraction of oil is
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  23. A mineral is termed as 'ore', if
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  25. Transportation of 35% oleum during winter suffers from the problem of freezing, which can be overcome…
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  28. The metallic aluminium is obtained from pure alumina in the presence of fused cryolite by
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  30. Cumene is the starting material for the production of