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Double Contact Double Absorption (DCDA) process is the most recent process for the manufacture of

A. Nitric acid

B. Sulphuric acid

C. Ammonium sulphate

D. Hydrochloric acid

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  1. __________ process is used for the manufacture of sodium carbonate by ammonia soda process.
  2. An oil is converted into fat by its
  3. Liquefaction of gases cannot be done by
  4. Which is the main reducing agent during production of iron from iron ore in a blast furnace?
  5. Which one of the following is not likely to be a constituent of vegetable oils?
  6. Pure rectified spirit contains about __________ percent alcohol.
  7. __________ of quicklime produces slaked lime.
  8. Pick out the wrong statement.
  9. The basic constituent of vegetable oils is
  10. Chemical name of Grignard reagent is
  11. Sizing material is incorporated in paper to
  12. Solvent extracted oil
  13. The catalyst used in the production of elemental sulphur from H2S (by oxidation-reduction) is
  14. The most stable allotropic form of phosphorous is the __________ phosphorous.
  15. Polymethyl methacrylate (PMMA) is known as
  16. __________ glass is used for the manufacture of optical glass.
  17. Dacron is a
  18. Antibiotic
  19. Hydrogen gas is not produced commercially (for nitrogenous fertiliser manufacture) by
  20. Penicillin, an antibiotic drug was discovered by
  21. Nylon-66 is so named because the
  22. Pick out the wrong statement.
  23. Pick out the wrong statement.
  24. Glycerine is not used in the
  25. Sulphuric acid is mainly used in the __________ industry.
  26. Sand and __________ is fused at 1300°C, to produce sodium silicate.
  27. Concentration of NaOH solution produced by mercury electrolytic cell is about __________ percent.
  28. Which of the following is a constituent of coffee?
  29. Detergent is produced by the sulphonation of dodecyl benzene, which is an __________ reaction.
  30. Starting material for the production of butadiene in India is