The main element used in the vulcani-sation of rubber is

A. nickel

B. copper

C. sulphur

D. graphite

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

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  1. A form of carbon which is a good lubricant is
  2. Calamine is a ore of
  3. An example of stimulant fertilizer is
  4. In the nitrogen cycle, denitrifying bacteria
  5. The raw materials required for the manufacture of glass are
  6. A mixture of carbon monoxide and hydrogen is
  7. The form of carbon used in decolourising sugar solution is
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  10. BHC is a
  11. Which of the following types of water gives lather easily with soap?
  12. Chloroform used as anaesthetic should be preserved In the dark in tightly stoppered bottles because…
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  14. A hormone which contains iodine is
  15. Galvanising is coating Iron with
  16. Ozone is an allotrope of Oxygen, containing ______ atom/s of oxygen per molecule instead of two.
  17. Rusting of iron cannot be prevented by
  18. Carbogen is used in
  19. The scientist associated with the discovery of the nucleus was
  20. In the process of purification of water for town supply, the substance used to remove bad smell and…
  21. Which is the 'odd man' in the following?
  22. LSD is
  23. The gas used in balloons in the place of hydrogen is
  24. Argyrol used as eye ointment is a solution of
  25. The hormone which absorption is increases glucose oxidation and glucose
  26. Which of the following la a very good supporter of combustion?
  27. Jeweller's rouge is
  28. Which of the following process involves removal of the elements of water?
  29. Physico-chemical characteristics of water in water sources undergo changes due to
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