__________ are used as corrosion inhibitor for iron & steel in aqueous solutions.

A. Phosphates

B. Chromates

C. Sulphates

D. Bi-carbonates

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  1. Roasting of metallurgical ores is done mainly to
  2. Thermosetting plastic materials
  3. Vegetable oils and fats basically differ in their
  4. Concentration of sulphide ores is done usually by
  5. Fusel oil is a/an
  6. Which of the following is the second major component of cement?
  7. The manufacture of Kraft pulp is done by a/an __________ process.
  8. Vinyl chloride (CH2 = CH.Cl) is produced by the thermal pyrolysis of ethylene dichloride at a pressure…
  9. Which of the following is not an antibiotic?
  10. Naphthalene is removed from coke oven gas by
  11. Hard water
  12. Chemical name of 'alum' is
  13. Silicon carbide is a/an
  14. Oils are partially hydrogenated (not fully) to manufacture Vanaspati, because fully saturated solidified…
  15. Coke oven gas consists mainly of
  16. Poly Tetrafluoroethylene (P.T.F.E.) is known as
  17. Raw material used in alcohol distilleries in India is
  18. Cellulose percentage in bamboo fibre is about
  19. Which of the following is a constituent of vinegar?
  20. Salt cake is chemically represented by
  21. Teflon is
  22. Pick out the wrong statement pertaining to nitric acid.
  23. Penicillin is separated from fermented broth by
  24. Chloramines are used in water treatment for
  25. __________ process is used for the commercial production of nitric acid by the catalytic oxidation of…
  26. More than 100 percent of __________ is present in oleum.
  27. Commercial production of Vanaspati is done by __________ of edible vegetable oils.
  28. Conversion of SO2 to SO3 in Monsanto 4-pass converter is about __________ percent.
  29. Pick out the wrong statement.
  30. Trinitrotoluene (TNT), an explosive, is made by the nitration of