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Co-efficient of thermal expansion of glass is decreased by the addition of __________ during its manufacture.

A. CaO

B. MnO2

C. ZnO

D. FeS

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  1. In the production of soda ash by Solvay process, the by-product is
  2. For the hydrogenation of oils, __________ (i) __________ is commonly used as catalyst and __________…
  3. Plaster of Paris is
  4. Catalyst used in the oxidation of benzene to produce Maleic anhydride is
  5. A 'unit process' is exemplified by the
  6. Carboxymethyl cellulose (CMC) is added in detergents to act as a/an
  7. Alkylbenzene sulfonate (ABS) is a
  8. Catalytic oxidation of naphthalene produces
  9. Cellulose percentage in bamboo fibre is about
  10. In sulphate pulp manufacture, the pressure and temperature in the digestor is
  11. P.T.F.E. (Poly tetra fluoro ethylene) is commercially known as
  12. Vegetable oils contain large quantity of glycerides of unsaturated acids. When the vegetable oils contain…
  13. Which of the following is an additional step in the manufacture of paper from bagasse as compared to…
  14. Dehydrogenation of Isopropanol produces
  15. __________ paper is used in the manufacture of newsprint paper.
  16. Widely used method for the conditioning of boiler feed water is the
  17. Cement setting under water employs a/an __________ process.
  18. Cumene is the starting material for the production of
  19. Separation of fresh water from sea water can be done by the __________ operation.
  20. Frasch process is for
  21. Fourdrinier machine is used in the manufacture of
  22. Styrene is produced from ethyl benzene by the process of
  23. Which of the following is used as a binding material in soap to improve soap texture?
  24. Parathion and Malathion are
  25. Which of the following is an yellow pigment?
  26. Fourdrinier machine is used in the manufacture of
  27. Which of the following is a detergent?
  28. White phosphorous is stored under water, because
  29. Ethyl alcohol cannot be produced
  30. Which of the following is not present in bagasse fibre?