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Chemical Engineering :: Chemical Process

  1. Which of the following is a disacchride?

  2. A.

     Sucrose

    B.

     Glucose

    C.

     Starch

    D.

     Maltose


  3. Sucrose content in the raw juice extracted from sugar cane is about __________ percent.

  4. A.

     1 - 2

    B.

     15 - 20

    C.

     50 - 60

    D.

     80 - 85


  5. Salt cake is chemically represented by

  6. A.

     Na₂SO₄

    B.

     CaSO₄.1/2 H₂O

    C.

     MgSO₄

    D.

     BaSO₄


  7. Prussian blue is chemically represented by

  8. A.

     FeO.TiO₂

    B.

     Ca SO₄ . 2H₂O

    C.

     Fe₄ [Fe (CN₆)₃]

    D.

     AlF₃ . 3NaF


  9. Flash point of most vegetable oils is about __________ °C.

  10. A.

     50

    B.

     100

    C.

     200

    D.

     300


  11. In the Solvay process, the product from the calciner is

  12. A.

     Light soda ash

    B.

     Dense soda ash

    C.

     Sodium bicarbonate

    D.

     Dehydrated soda ash


  13. Magnesium and calcium __________ cause temporary hardness of water.

  14. A.

     Carbonates

    B.

     Bicarbonates

    C.

     Phosphates

    D.

     Sulphates


  15. Styrene (a monomer for the production of polystyrene) is commercially produced by

  16. A.

     Catalytic dehydrogenation of ethyl benzene

    B.

     Dehydration of ethyl alcohol followed by hydrogenation

    C.

     Reacting ethylene oxide with acetal-dehyde

    D.

     Fermentation of starch


  17. Mercury cells for caustic soda manufacture, compared to diaphragm cells

  18. A.

     Require lower initial investment

    B.

     Require more power

    C.

     Produce lower concentration NaOH

    D.

     None of these


  19. Trinitrotoluene (TNT), an explosive, is made by the nitration of

  20. A.

     Nitrobenzene

    B.

     Toluene

    C.

     Nitrotoluene

    D.

     Benzene