__________ glass has the lowest co-efficient of thermal expansion and hence is more heat resistant.

A. Pyrex

B. Soda lime

C. Lead

D. High silica

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

You can do it
  1. Which of the following is the main constituent of the mother liquor produced in salt industry?
  2. Pick out the wrong statement.
  3. Air used in aerobic fermentation must be sterilized, otherwise the
  4. Synthetic glycerine is produced from
  5. Roasting of metallurgical ores is done mainly to
  6. Platinum catalyst used in the earlier days of sulphuric acid manufacture by contact process suffers…
  7. Catalytic oxidation of naphthalene produces
  8. Dry ice (solidified CO2) is used for the
  9. Pick out the wrong statement.
  10. Phosphate rock is a raw material for the manufacture of
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  12. All enzymes are made of
  13. Sand and __________ is fused at 1300°C, to produce sodium silicate.
  14. Which of the following is not an abrasive material?
  15. Anion exchanger is regenerated usually with
  16. CaSO4 . ½H2O is known as
  17. Average sulphur content in Indian pyrites is about __________ percent.
  18. Which of the following sugars is the sweetest?
  19. Nitro-glycerine absorbed in wood flour, sodium nitrate or ammonium nitrate is commercially used as controlled…
  20. Lime and soda ash are added to water to remove
  21. Fermentation of molasses to produce ethyl alcohol is done at __________ °C.
  22. Commercial scale production of hydrogen from iron-steam reaction represented by, 3Fe + 3H2O = Fe3O4…
  23. Catalyst used in the oxidation of benzene to produce Maleic anhydride is
  24. Yellow phosphorus is transported under
  25. The chamber process is
  26. Fermentation is adversely affected by the
  27. __________ is an ore of lead.
  28. Vulcanisation of rubber
  29. Pasteurisation of milk means
  30. Raw materials used for producing __________ cement does not contain iron oxide.