Extraction of __________ employs an electrolytic process.

A. Aluminium

B. Silver

C. Copper

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

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

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  1. Pick out the wrong statement.
  2. Le-Blanc process is a primitive process for the manufacture of
  3. Pitch (a product of coal tar distillation) is always mixed with creosote oil, when it is to be burnt…
  4. Hollander beater used during paper pulp manufacture does not facilitate the __________ of fibre.
  5. The most commonly used substance to speed up the sedimentation of sewage is
  6. Electro deposition of metals i.e. electroplating is never done on
  7. Chemical name of aspirin (an analgesic drug) is
  8. Esterification reaction
  9. How much temperature is maintained during quicklime manufacture in the calcination zone of the vertical…
  10. Phthalic anhydride is used
  11. Isopropyl benzene produced by alkylation of benzene with propylene is known as
  12. Sulphuric acid solution having a specific gravity of 1.20 at room temperature is used mainly for the
  13. Which of the following is an yellow pigment?
  14. Which is a high grade pulp?
  15. Multistage catalytic converter is not used in the
  16. Lindane is
  17. The most popular and common detergent i.e., alkyl benzene sulfonate (ABS) is a/an __________ detergent.
  18. Pick out the wrong statement pertaining to nitric acid.
  19. Which of the following processes can remove both temporary as well as permanent hardness of water?
  20. Pick out the wrong statement.
  21. Finely ground calcium aluminate & silicate is a/an
  22. Pick out the wrong statement.
  23. Nickel is not used as a catalyst in the
  24. Hard water
  25. Carboxymethyl cellulose (CMC) is added in detergents to
  26. During the manufacture of sulphuric acid, the temperature of molten sulphur is not increased beyond…
  27. Solvay process as compared to dual process(i.e. modified Solvay process).
  28. Naphthols are derivates of
  29. Sulphuric acid completely saturated with sulphur trioxide is called
  30. Which of the following is not produced on commercial scale from sea water?