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Main constituents of natural rubber is

A. Polystyrene

B. Polyisoprene

C. Polybutadiene

D. Polychlorophrene

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  1. Celluloid is chemically
  2. Sodium bisulphite is used for __________ water.
  3. Oil is a/an
  4. Which of the following is the most adverse factor challenging the choice of mercury electrolytic cell…
  5. Aryl benzene sulphonate (ABS) is a
  6. Fat splitting catalyst is
  7. Hydrophilic group of a soap or detergent solution is
  8. Oxidation of SO2 to SO3 is favoured by
  9. Yellow phosphorus is transported under
  10. Catalytic oxidation of naphthalene produces
  11. Reverse osmosis is normally used for the
  12. Carbon content of pitch (residue of coal tar distillation) is around __________ percent.
  13. Platinum is a versatile catalyst for many processes in chemical industries. It is highly prone to be…
  14. Hydrogen gas is not produced commercially (for nitrogenous fertiliser manufacture) by
  15. __________ of rubber decreases after its vulcanisation.
  16. Thermal pyrolysis of ethylene dichloride produces
  17. Which of the following is used as a binding material in soap to improve soap texture?
  18. How much temperature is maintained during quicklime manufacture in the calcination zone of the vertical…
  19. Percentage of uranium in Carnotite ore found in Jadugoda (Jharkhand) is about
  20. Which of the following paper does not require a filler during manufacture?
  21. Phenolic antiseptics are added in the __________ soap.
  22. More than 100 percent of __________ is present in oleum.
  23. Polycaprolactam is commercially known as
  24. __________ are added in lacquers to remove film brittleness and to improve adhereness.
  25. In primitive days, __________ was being manufactured by Leblanc Process.
  26. Synthetic glycerine is produced from
  27. Starting raw material for the manufacture of alum is
  28. Which of the following has sodium bicarbonate as its main constituent?
  29. The process involved in converting rubber into a thin sheet or coating it on fabric is called
  30. __________ process is used for the manufacture of sodium carbonate by ammonia soda process.