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Chemical Engineering :: Chemical Process

  1. Pick out the wrong statement.

  2. A.
    Catalytic hydrogenation of carbon monoxide produces methyl alcohol.
    B.
    In nylon-6, the number 6 represents the total number of carbon atoms in the ring.
    C.
    Raw materials for DDT manufacture are benzene and chlorine.
    D.
    Ethanolamines are produced by using ammonia and ethylene oxide as raw material.

  3. Molecular weights of polymers are in the range of

  4. A.
    102 - 102
    B.
    105 - 109
    C.
    102 - 107
    D.
    109 - 1011

  5. Sulphur removal by heating of pyrite ore in presence of air is called its

  6. A.
    reduction
    B.
    roasting
    C.
    calcination
    D.
    smelting

  7. Deacon's method is used for the manufacture of

  8. A.
    glauber's salt
    B.
    common salt
    C.
    chlorine
    D.
    graphite electrode

  9. Pick out the true statement pertaining to water treatment.

  10. A.
    Slow sand filters can remove colour completely.
    B.
    Activated carbon can be used for taste & odour control without subsequent filtration.
    C.
    Application of activated carbon reduces the temporary hardness of water.
    D.
    Normally, the turbidity is removed by adding a coagulent prior to sedimentation.

  11. Laboratory glass wares which reacts with hydroflouric acid, are made of the __________ glass.

  12. A.
    lead
    B.
    borosilicate
    C.
    soda lime
    D.
    alkali silicate

  13. Prussian blue is chemically represented by

  14. A.
    FeO.TiO2
    B.
    Ca SO4 . 2H2O
    C.
    Fe4 [Fe (CN6)3]
    D.
    AlF3 . 3NaF

  15. Transportation of 35% oleum during winter suffers from the problem of freezing, which can be overcome by the addition of small quantity of

  16. A.
    nitric acid
    B.
    hydrochloric acid
    C.
    methyl alcohol
    D.
    formic acid

  17. The most stable allotropic form of phosphorous is the __________ phosphorous.

  18. A.
    white
    B.
    black
    C.
    yellow
    D.
    red

  19. Function of thinner in a paint is to

  20. A.
    accelerate the oxidation of oil.
    B.
    prevent gelling of the paint.
    C.
    suspend pigments & dissolve film forming materials.
    D.
    form a protective film.