Home / Chemical Engineering / Stoichiometry :: Section 2

Chemical Engineering :: Stoichiometry

  1. According to Raoult's law, "The vapor pressure exerted by component in a solution is proportional to the mole fraction of that component." Raoult's law is not applicable under the following assumption/condition.

  2. A.
    No component is concentrated at the surface of the solution.
    B.
    The component molecules are non polar and are of almost equal size.
    C.
    In the formation of solution, chemical combination/molecular association between unlike molecules takes place.
    D.
    The attractive forces between like and unlike molecules are almost equal.

    View Answer

    Workspace

    Discuss Discuss in Forum


  3. Kinematic viscosity of 1 m2 /second is equivalent to __________ stokes.

  4. A.
    10
    B.
    102
    C.
    103
    D.
    104

    View Answer

    Workspace

    Discuss Discuss in Forum


  5. Internal energy of a substance comprises of the __________ energy.

  6. A.
    vibrational
    B.
    rotational
    C.
    translational
    D.
    all (a), (b) & (c)

    View Answer

    Workspace

    Discuss Discuss in Forum


  7. In a binary liquid solution of components A and B, if component A exhibits positive deviation from Raoult's law, then component B

  8. A.
    exhibits positive deviation from Raoult's law.
    B.
    exhibits negative deviation from Raoult's law.
    C.
    obeys Raoult's law.
    D.
    may exhibit either positive or negative deviation from Raoult's law.

    View Answer

    Workspace

    Discuss Discuss in Forum


  9. Avogadro number is the number of molecules in one __________ of a gas.

  10. A.
    gram
    B.
    kilogram
    C.
    gm.mole
    D.
    litre

    View Answer

    Workspace

    Discuss Discuss in Forum


  11. Number of gram equivalent of solute dissolved in one litre of solution is called its

  12. A.
    normally
    B.
    molarity
    C.
    molality
    D.
    formality

    View Answer

    Workspace

    Discuss Discuss in Forum


  13. The number of atoms of oxygen present in 11.2 litres of ozone (O3) at N.T.P. are

  14. A.
    3.01 x 1022
    B.
    6.02 x 1023
    C.
    9.03 x 1024
    D.
    1.20 x 1024

    View Answer

    Workspace

    Discuss Discuss in Forum


  15. Simultaneous doubling of the absolute temperature of a gas and reduction of its pressure to half, will result in __________ in the volume of the gas.

  16. A.
    no change
    B.
    doubling
    C.
    l/4th reduction
    D.
    four fold increase

    View Answer

    Workspace

    Discuss Discuss in Forum


  17. Heat of reaction is not influenced by

  18. A.
    the route/method through which final products are obtained.
    B.
    the physical state (e.g., solid, liquid or gaseous) of reactants and products.
    C.
    whether the reaction is carried out at constant temperature or constant pressure.
    D.
    none of these.

    View Answer

    Workspace

    Discuss Discuss in Forum


  19. Pick out the wrong conversion formula for the conversion of weight units :

  20. A.
    1 tonne = 1000 kg = 22.046 lbs
    B.
    1 U.S. ton = 907 kg = 0.907 tonne = 0.893 ton
    C.
    1 ton = 2240 lbs = 1016 kg = 1.016 tonnes = 1.12 U.S. tons
    D.
    none of these

    View Answer

    Workspace

    Discuss Discuss in Forum