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The type of high refractive index glass used in optical instruments is __________ glass.

A. Pyrex

B. Flint

C. Crookes

D. None of these

Related Questions

  1. Laboratory glass wares which reacts with hydrofluoric acid, are made of the __________ glass.
  2. The process used for the manufacture of ethyl alcohol from molasses is
  3. Pick out the wrong statement.
  4. __________ acid is the main constituent of cotton seed oil.
  5. Sea water contains about __________ ppm of bromine.
  6. The process involved in converting rubber into a thin sheet or coating it on fabric is called
  7. Reaction of an alcohol with organic acid is called the __________ reaction.
  8. Dehydrogenation of ethyl benzene produces
  9. Starting raw material for the manufacture of alum is
  10. Anion exchanger is regenerated usually with
  11. Platinum catalyst used in the earlier days of sulphuric acid manufacture by contact process suffers…
  12. Use of water having dissolved oxygen in boilers promotes
  13. Reverse osmosis is normally used for the
  14. Permanent hardness of water can be removed by
  15. Which of the following is used as a binding material in soap to improve soap texture?
  16. Contact process of sulphuric acid manufacture
  17. Poly Tetrafluoroethylene (P.T.F.E.) is known as
  18. In the production of soda ash by Solvay process, the by-product is
  19. Wax is a
  20. Coagulant is used __________ filtration.
  21. Wood charcoal is used for decolouration of sugar, because it __________ the coloured materials.
  22. Which of the following fuel gases contains maximum amount of carbon monoxide?
  23. Styrene-butadiene-rubber (SBR) as compared to natural rubber has
  24. Fluorescent dyes are added in detergents to
  25. Hydrazine is largely used
  26. Pick out the wrong statement.
  27. Bordeaux mixture is a/an
  28. Na2CO3.10H2O is called
  29. Alkylbenzene sulfonate (ABS) is a
  30. Cellulose content of bamboo and ideal fibrous raw material for the manufacture of paper is __________…

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