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  • Question
  • Gelatine which is a nitrogenous organic protein is obtained by the hydrolysis of


  • Options
  • A. callagen
  • B. tannin
  • C. molasses
  • D. carbohydrate

  • Correct Answer
  • callagen 


  • Chemical Process problems


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    • 1. Mineral oils (e.g. petroleum oils) are preferred over fatty oils (e.g. mustard oil, ghee, tallow, palm oil, olive oil etc.) as a lubricant due to its

    • Options
    • A. poor oxidation stability and high gum forming tendency.
    • B. greater tendency of decomposition at elevated temperature.
    • C. hydrolysis tendency in presence of water.
    • D. all (a), (b) and (c).
    • Discuss
    • 2. Raw materials used for producing __________ cement does not contain iron oxide.

    • Options
    • A. waterproof
    • B. slag
    • C. white
    • D. pozzolan
    • Discuss
    • 3. Very fine suspended and colloidal impurities are removed from water by a process called

    • Options
    • A. sedimentation
    • B. coagulation
    • C. disinfection
    • D. softening
    • Discuss
    • 4. Zeolite removes both temporary as well as permanent hardness of water by precipitating calcium and magnesium present in water as insoluble zeolites. Used zeolite is regenerated by flushing with the solution of

    • Options
    • A. calcium sulphate
    • B. sodium chloride
    • C. sodium sulphate
    • D. magnesium chloride.
    • Discuss
    • 5. The drug used in contraceptives is

    • Options
    • A. sulphadizene
    • B. mestranol
    • C. methyl salicylate
    • D. pencillin
    • Discuss
    • 6. Polycaprolactum is commercially known as

    • Options
    • A. nylon-6
    • B. nylon-66
    • C. dacron
    • D. rayon
    • Discuss
    • 7. Claude process of gas liquefaction employs

    • Options
    • A. merely compression of gas beyond its critical pressure.
    • B. Joule-Thomson expansion cooling.
    • C. heat exchange with colder stream.
    • D. adiabatic expansion against a piston or in a turbine.
    • Discuss
    • 8. Pasteurisation of milk means

    • Options
    • A. removal of fatty and albuminous substance from it.
    • B. killing of organisms present in it by heating it at controlled temperature without changing its natural characteristics.
    • C. inhibiting the growth of micro-organisms without killing them.
    • D. none of these.
    • Discuss
    • 9. Esterification reaction

    • Options
    • A. produces soap.
    • B. is reversible.
    • C. is a reaction between an alcohol and an organic acid.
    • D. all (a), (b) and (c).
    • Discuss
    • 10. Thermal conductivity measurement com-prises the working principle of a

    • Options
    • A. CO2 analyser
    • B. polarimeter
    • C. spectrometer
    • D. chromatograph
    • Discuss


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