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Chemical Engineering :: Chemical Process

  1. Chemical formula of 'salt cake' is

  2. A.

     Na₂SO₄

    B.

     CaSO₄

    C.

     MgSO₄

    D.

     BaSO₄

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  3. Detergent is produced by the sulphonation of dodecyl benzene, which is an __________ reaction.

  4. A.

     Endothermic

    B.

     Exothermic

    C.

     Irreversible

    D.

     Both B and C

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  5. Plasticisers are added to paints to

  6. A.

     Make it corrosion resistant

    B.

     Make glossy surface

    C.

     Give elasticity & prevent cracking of the film

    D.

     Increase atmospheric oxidation

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  7. Pick out the correct statement.

  8. A.

     A fat is converted into oil by its hydrogenation

    B.

     There is no difference between a fat and an oil so far as its physical properties are concerned

    C.

     All vegetable oils except coconut oil, contains fatty acids having more than sixteen carbon atoms

    D.

     Vegetable oils are classified as drying, non-drying and semi drying oils depending upon their fatty acids content

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  9. Which catalyst is used in the manufacture of ethylene oxide by oxidation of ethylene?

  10. A.

     AgO

    B.

     Al2O₃

    C.

     ZnCl₂

    D.

     FE₂O₃

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  11. Brackish water which contains mostly dissolved salt, can be purified by the __________ process.

  12. A.

     Reverse osmosis

    B.

     Sand filter

    C.

     Lime soda

    D.

     Permutit

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  13. Stereospecific agents are exemplified by

  14. A.

     Radiation

    B.

     Supported metal oxide catalysts

    C.

     Ziegler catalysts

    D.

     All of the above

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  15. High purity nitrogen is used in

  16. A.

     Making protective gas (95% N₂ + 5% H₂) for annealing of cold rolled steel strip coils

    B.

     Fire fighting purposes

    C.

     Both A & B

    D.

     Neither A nor B

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  17. A mixture of chlorine & sodium bromide acts as a/an

  18. A.

     Insecticides

    B.

     Analgesic drug

    C.

     Fire retardant

    D.

     Hydrogenation catalyst

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

  20. A.

     Phosphates

    B.

     Chromates

    C.

     Sulphates

    D.

     Bi-carbonates

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