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  • Question
  • Which of the following is the most adverse factor challenging the choice of mercury electrolytic cell process for the production of caustic soda?


  • Options
  • A. High cost of mercury.
  • B. High specific gravity of mercury.
  • C. Non-availability of high purity mercury.
  • D. Pollution of water stream by mercury.

  • Correct Answer
  • Pollution of water stream by mercury. 


  • Chemical Process problems


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    • 1. Styrene is produced from ethyl benzene by the process of

    • Options
    • A. dehydrogenation
    • B. oxidation
    • C. alkylation
    • D. dehydration
    • Discuss
    • 2. Which is the main reducing agent during production of iron from iron ore in a blast furnace?

    • Options
    • A. C
    • B. CO
    • C. CO2
    • D. H2
    • Discuss
    • 3. Pitch (a product of coal tar distillation) is always mixed with creosote oil, when it is to be burnt in a burner, because

    • Options
    • A. its calorific value is very less.
    • B. tar neutralises the residual acids present in pitch.
    • C. it reduces viscosity and imparts fluidity for its transportation through pipelines at economic pressure drop.
    • D. all (a), (b) and (c).
    • Discuss
    • 4. The main use of HCl is in the

    • Options
    • A. drilling of petroleum wells and pickling of steel sheets.
    • B. manufacture of cationic detergent.
    • C. treatment of spent fuel of nuclear reactor.
    • D. none of these.
    • Discuss
    • 5. Epoxy resin

    • Options
    • A. is a good adhesive.
    • B. is an elastomer.
    • C. cannot be used for surface coatings.
    • D. is a polyester.
    • Discuss
    • 6. Paper pulp produced by kraft/sulphate process is

    • Options
    • A. bleached easily
    • B. dull white in color
    • C. strong fibrous
    • D. dark colored
    • Discuss
    • 7. Frasch process is for

    • Options
    • A. making oxygen
    • B. producing helium
    • C. mining sulphur
    • D. making nitrogen
    • Discuss
    • 8. Viscose rayon is chemically

    • Options
    • A. cellulose nitrate
    • B. regenerated cellulose nitrate
    • C. cellulose acetate
    • D. regenerated cellulose acetate
    • Discuss
    • 9. The gasification reaction represented by, C + H2O = CO + H2, is a/an __________ reaction.

    • Options
    • A. exothermic
    • B. endothermic
    • C. catalytic
    • D. autocatalytic
    • Discuss
    • 10. __________ process is used for the manufacture of sodium carbonate by ammonia soda process.

    • Options
    • A. Ostwald's
    • B. Bosch
    • C. Solvay
    • D. Haber's
    • Discuss


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