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Chemical Engineering :: Stoichiometry

  1. Unit of mass velocity is

  2. A.
    kg/m . hr
    B.
    kg/m2.hr
    C.
    kg/hr
    D.
    kg/m2

  3. With increase in temperature, the surface tension of water

  4. A.
    increases
    B.
    decreases
    C.
    remains constant
    D.
    increases linearly

  5. Enthalpy change resulting, when unit mass of solid is wetted with sufficient liquid, so that further addition of liquid produces no additional thermal effect, is called the heat of

  6. A.
    mixing
    B.
    adsorption
    C.
    wetting
    D.
    complete wetting

  7. Claussius Clapeyron equation applies to the __________ process.

  8. A.
    sublimation
    B.
    melting
    C.
    vaporisation
    D.
    all (a), (b) & (c)

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

  10. A.
    Ostwald
    B.
    Cox
    C.
    Mollier's
    D.
    Enthalpy-concentration

  11. Degrees of freedom will be equal to the number of components for a system comprising of

  12. A.
    only soluble liquid components.
    B.
    partially miscible two liquid components system having two phases.
    C.
    two liquid components and one solute (soluble in both the liquids).
    D.
    none of these.

  13. A perfectly insulated container of volume V is divided into two equal halves by a partition. One side is under vacuum, while the other side has one mole of an ideal gas (with constant heat capacity) at 298 K. If the partition is broken, the final temperature of the gas in the container

  14. A.
    will be greater than 298 K.
    B.
    will be 298 K.
    C.
    will be less than 298 K.
    D.
    can not be determined.

  15. Na2SO4. 10H2O crystals are formed by cooling 100 Kg of 30% by weight aqueous solution of Na2SO4. The final concentration of the solute in the solution is 10%. The weight of crystals is

  16. A.
    20
    B.
    32.2
    C.
    45.35
    D.
    58.65

  17. Which of the following gases will have the- highest kinetic energy per mole at the same pressure & temperature ?

  18. A.
    Chlorine
    B.
    Nitrogen
    C.
    Ethane
    D.
    All the gases will have the same KE

  19. What fraction of the total pressure is exerted by oxygen, if equal weights of oxygen and methane are mixed in an empty vessel at 25°C ?

  20. A.
    2/3
    B.
    1/3
    C.
    1/2
    D.
    l/3 x