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The main component of Pyrex glass is

A. Zinc

B. Lead

C. Boron

D. Selenium

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  1. Saponification number of an oil or fat
  2. Styrene is produced from ethyl benzene by the process of
  3. The most economical pulp for the production of newsprint would be the __________ pulp.
  4. Deaeration of water in its treatment is necessary, as it
  5. Chlorine gas is produced by the electrolysis of brine (NaCl solution with solid NaCl make up) in mercury…
  6. Main constituent of limestone is
  7. Bordeaux mixture is a/an
  8. Which of the following has sodium bicarbonate as its main constituent?
  9. The main use of activated carbon in water treatment is to control
  10. Vanillin is a type of
  11. Pick out the wrong statement. Iodine value of an oil or fat is
  12. The enzyme which converts starch into the disaccharides maltose is
  13. Stereospecific agents are exemplified by
  14. The only commercial Fischer-Tropsch plant for producing liquid hydrocarbon fuel from coal is located…
  15. Phenol formaldehyde is produced by condensation polymerisation. It is also known as
  16. Air used in aerobic fermentation must be sterilized, otherwise the
  17. The major use of butadiene is
  18. Which of the following is an yellow pigment?
  19. Coke used for the production of calcium carbide should have
  20. CaSO4 . ½H2O is known as
  21. Exothermic condensation reaction of monochlorobenzene with chloral in presence of 20% oleum as catalyst…
  22. Parathion and Malathion are
  23. Zeolite is a/an
  24. The main product of high temperature carbonisation of coal is
  25. Fat splitting catalyst is
  26. The process involved in converting rubber into a thin sheet or coating it on fabric is called
  27. Bromine is used in the preparation of
  28. Raw materials used for producing __________ cement does not contain iron oxide.
  29. Hydrolysis of sugar is called
  30. Permanent hardness of water is due to the presence of calcium & magnesium