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Laboratory glass wares which reacts with hydrofluoric acid, are made of the __________ glass.

A. Lead

B. Borosilicate

C. Soda lime

D. Alkali silicate

Correct Answer : B.


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  1. Production of alcohol by fermentation of molasses is a/an __________ process.
  2. Calcination of limestone is not done in a __________ kiln for producing lime.
  3. Temperature during hydrogenation of oil should not be more than 200°C, otherwise it will result…
  4. Permanent hardness of water can be removed by
  5. Saponification number of an oil or fat
  6. Styrene (a monomer for the production of polystyrene) is commercially produced by
  7. Main constituent of limestone is
  8. The basic constituent of vegetable oils is
  9. Alum is commercially produced from
  10. Pick out the wrong statement pertaining to nitric acid.
  11. Drinking (potable) water treatment does not involve
  12. Which of the following is not a product of coal tar distillation?
  13. The major constituent of black liquor generated during paper manufacture is sodium
  14. Salt is added in the kettle during soap manufacture to separate
  15. Pick out the wrong statement.
  16. Which one of the following is not likely to be a constituent of vegetable oils?
  17. Vegetable oils contain large quantity of glycerides of unsaturated acids. When the vegetable oils contain…
  18. Soaps remove dirt by
  19. The most popular and common detergent i.e., alkyl benzene sulfonate (ABS) is a/an __________ detergent.
  20. Coloured glass is obtained by mixing of colored salts. Addition of __________ oxide is done to impart…
  21. Which catalyst is used in the manufacture of ethylene oxide by oxidation of ethylene?
  22. Esterification reaction
  23. Fish contains about __________ percent oil.
  24. Deacon's method is used for the manufacture of
  25. Caprolactam (a raw material for nylon-6 manufacture) is produced from
  26. Bromine content in sea water may be around __________ ppm.
  27. Favourable conditions for the liquefaction of gases in general are
  28. Widely used method for the conditioning of boiler feed water is the
  29. Alcohol percentage in molasses may be around
  30. Carboxymethyl cellulose (CMC) is added in detergents to