__________ glass is used for the manufacture of optical glass.

A. Pyrex

B. Soda

C. Flint

D. Crooke's

Related Questions

  1. A mineral is termed as 'ore', if
  2. Main use of hydrazine is
  3. Which glass is usually used in optical work?
  4. Consider the production of ammonia from methene and air as raw materials. The catalysts used are:(i)…
  5. Sulphuric acid is mainly used in the __________ industry.
  6. A 'unit process' is exemplified by the
  7. Carboxymethyl cellulose (CMC) is added in detergents to
  8. Massecuite is a terminology used in the __________ industry.
  9. Lurgi coal gasifier is a pressurised __________ bed reactor.
  10. Sulphuric acid solution having a specific gravity of 1.20 at room temperature is used mainly for the
  11. Which of the following is a disaccharide?
  12. Which of the following has sodium bicarbonate as its main constituent?
  13. Soaps remove dirt by
  14. Nylon-66 is so named because the
  15. High magnesia lime is added to hot sugar cane juice (during the manufacture of sugar) to
  16. Sucrose is a disaccharide consisting of
  17. __________ is an ore of lead.
  18. Graphite is a/an
  19. The purpose of tanning in leather industry is to
  20. Styrene is produced from ethyl benzene by the process of
  21. For the hydrogenation of oils, __________ (i) __________ is commonly used as catalyst and __________…
  22. Pick out the wrong statement.
  23. Boiling of water containing temporary hardness produces
  24. Wood charcoal is used for decolouration of sugar, because it __________ the coloured materials.
  25. Roasting of metallurgical ores is done mainly to
  26. The function of gypsum addition during cement making is to
  27. Pick out the wrong statement.
  28. BHC (Benzene hexachloride) is made by the chlorination of benzene
  29. Glass is
  30. Synthesis gas is a mixture of

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