Home / Chemical Engineering / Stoichiometry :: Section-9

Chemical Engineering :: Stoichiometry

  1. Boiling point of a solution as compared to that of the corresponding solvent is

  2. A.

     Less

    B.

     More

    C.

     Same

    D.

     Either more or less; depends upon the solvent

    View Answer

    Workspace

    Discuss Discuss in Forum


  3. Air at a temperature of 20°C and 750 mm Hg pressure has a relative humidity of 80%. What is its percentage humidity?
    Vapour pressure of water at 20°C is 17.5 mm Hg.

  4. A.

     80.38

    B.

     80

    C.

     79.62

    D.

     78.51

    View Answer

    Workspace

    Discuss Discuss in Forum


  5. Validity of the relationship, inputs = outputs, holds good for the system at steady state

  6. A.

     With chemical reaction

    B.

     Without chemical reaction

    C.

     Without chemical reaction & losses

    D.

     None of these

    View Answer

    Workspace

    Discuss Discuss in Forum


  7. The crystallisation of a solute from a solution may be done by

  8. A.

     Removal of pure solvent by evaporation

    B.

     Change of temperature thereby causing supersaturation

    C.

     Changing the nature of the system by the addition of a more soluble material

    D.

     All of the above

    View Answer

    Workspace

    Discuss Discuss in Forum


  9. 'Giga' stands for

  10. A.

     109

    B.

     10-12

    C.

     1012

    D.

     1015

    View Answer

    Workspace

    Discuss Discuss in Forum


  11. The vapor pressure of liquids (having similar chemical nature) at any specified temperature __________ with increasing molecular weight.

  12. A.

     Increases

    B.

     Decreases

    C.

     Remains unchanged

    D.

     Increases linearly

    View Answer

    Workspace

    Discuss Discuss in Forum


  13. __________ chart is a graph related to Antonie equation.

  14. A.

     Ostwald

    B.

     Cox

    C.

     Mollier's

    D.

     Enthalpy-concentration

    View Answer

    Workspace

    Discuss Discuss in Forum


  15. Sodium __________ has inverted solubility curve i.e. its solubility increases with the lowering of temperature.

  16. A.

     Carbonate (monohydrate)

    B.

     Chloride

    C.

     Thiosulphate

    D.

     Bisulphite

    View Answer

    Workspace

    Discuss Discuss in Forum


  17. Normality of a solution does not change with the increase in the

  18. A.

     Pressure

    B.

     Temperature

    C.

     Solute concentration

    D.

     Dilution of the solution

    View Answer

    Workspace

    Discuss Discuss in Forum


  19. The elevation in boiling point of a solution is proportional to the __________ of the solution.

  20. A.

     Molal concentration

    B.

     Reciprocal of the molal concentration

    C.

     Normality

    D.

     Molarity

    View Answer

    Workspace

    Discuss Discuss in Forum