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Chemical Engineering :: Chemical Process

  1. Pick out the wrong statement.

  2. A.

     High early strength cement are made from materials having high silica to lime ratio

    B.

     The function of gypsum in cement is to enhance its initial setting rate

    C.

     Acid resistant cements are known as silicate cement

    D.

     Major component of greyish portland cement is tricalcium silicate


  3. Which of the following is not produced on commercial scale from sea water?

  4. A.

     Bromine

    B.

     Magnesium compounds

    C.

     Potassium compounds

    D.

     Sodium sulphate


  5. Reverse osmosis is normally used for the

  6. A.

     Separation of isotopes of uranium from gaseous uranium hexaflouride

    B.

     Separation of helium from natural gas

    C.

     Desalination of brackish water to produce potable (drinking) water

    D.

     Purification of oxygen


  7. The only commercial Fischer-Tropsch plant for producing liquid hydrocarbon fuel from coal is located at

  8. A.

     SASOL (in South Africa)

    B.

     Redcar (U.K.)

    C.

     Los-Angles (U.S.A.)

    D.

     Trombay (India)


  9. In an integrated steel plant, NH₃ present in coke oven gas is normally recovered as

  10. A.

     (NH₄)2SO₄

    B.

     NH₄Cl

    C.

     (NH₄)2 NO₃

    D.

     Liquid NH₃


  11. Pick out the wrong statement.

  12. A.

     Pasteurisation of milk involves moderate heating followed by cooling

    B.

     Bakeries and breweries make use of yeasts

    C.

     Enzyme is a complex nitrogenous compound

    D.

     Oils and fats are alkaloids


  13. Fermentation is adversely affected by the

  14. A.

     Presence of air

    B.

     Absence of air

    C.

     High concentration

    D.

     Presence of ammonium salts


  15. Nitrogen is an essential component of

  16. A.

     Mineral salts

    B.

     Carbohydrates

    C.

     Fats

    D.

     Proteins


  17. Starting material for the commercial production of ethyl alcohol in India is

  18. A.

     Rice

    B.

     Molasses

    C.

     Fruit of Mahua tree

    D.

     Maize


  19. Oxidation of SO₂ to SO₃ is favoured by

  20. A.

     Low temperature and low pressure

    B.

     Low temperature and high pressure

    C.

     High temperature and low pressure

    D.

     High temperature and high pressure