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Chemical Engineering :: Chemical Process

  1. Pick out the wrong statement.

  2. A.

     Wine, rum & Vodka are prepared by the formulation of fruit juice, sugar beet & rye respectively

    B.

     Protein catalysts are called enzymes

    C.

     The rate of chemical reaction is independent of the concentration of reactants at high concentration of enzymes

    D.

     Total sugar content in molasses is about 10%


  3. The basic difference between vegetable oils and fats is in their

  4. A.

     Density

    B.

     Chemical properties

    C.

     Physical state

    D.

     Composition


  5. Catalyst used in the manufacture of sulphuric acid by chamber & contact processes are respectively

  6. A.

     V₂O₅ & Cr₂O₃

    B.

     Oxides of nitrogen & Cr₂O₃

    C.

     V₂O₅ on a porous carrier & oxides of nitrogen

    D.

     Oxides of nitrogen & V₂O₅ on a porous carrier


  7. Favourable conditions for the liquefaction of gases in general are

  8. A.

     High pressure & low temperature

    B.

     Low pressure & high temperature

    C.

     High pressure & high temperature

    D.

     Low pressure & low temperature


  9. Polycaprolactum is commercially known as

  10. A.

     Nylon-6

    B.

     Nylon-66

    C.

     Dacron

    D.

     Rayon


  11. Plasticisers are added to synthetic plastics to

  12. A.

     Impart flexibility

    B.

     Improve workability during fabrication

    C.

     Develop new improved properties not present in the original resins

    D.

     All of the above


  13. Main constituent of dolomite is

  14. A.

     CaCO₃

    B.

     MgCO₃

    C.

     K₂CO₃

    D.

     Na₂CO₃


  15. The major constituents of glass are

  16. A.

     Lime, clay and soda ash

    B.

     Sand, lime and soda ash

    C.

     Silica, alumina and clay

    D.

     Silica, alumina and soda ash


  17. Bakelite is chemically known as

  18. A.

     Polyvinyl chloride (PVC)

    B.

     Polybutadiene

    C.

     Phenol formaldehyde

    D.

     Polyurathane


  19. __________ nature of hypo (sodium thiosulphate) makes it useful in photography.

  20. A.

     Oxidising

    B.

     Reducing

    C.

     Complex forming

    D.

     Photochemical