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Chemical Engineering :: Stoichiometry

  1. The percentage ratio of the partial pressure of the vapor to the vapor pressure of the liquid at the existing temperature is

  2. A.
    termed as relative saturation.
    B.
    not a function of the composition of gas mixture.
    C.
    called percentage saturation.
    D.
    not a function of the nature of vapor.

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  3. The total number of atoms in 8.5 gm of NH3 is __________ x 1023.

  4. A.
    9.03
    B.
    3.01
    C.
    1.204
    D.
    6.02

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  5. The atomic weight of helium is 4 times that of hydrogen. Its diffusion rate as compared to hydrogen will be __________ times.

  6. A.
    1/2
    B.
    4
    C.
    2
    D.
    1/4

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  7. Osmotic pressure exerted by a solution prepared by dissolving one gram mole of a solute in 22.4 litres of a solvent at 0°C will be __________ atmosphere.

  8. A.
    0.5
    B.
    1
    C.
    1.5
    D.
    2

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  9. In general, the specific heats of aqueous solutions __________ with increase in the concentration of the solute.

  10. A.
    increase
    B.
    decrease
    C.
    remain unchanged
    D.
    none of these

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  11. The ratio of existing moles of vapor per mole of vapor free gas to the moles of vapor that would be present per mole of vapor free gas, if the mixture were saturated at the existing temperature & pressure, is termed as the

  12. A.
    relative humidity.
    B.
    relative saturation.
    C.
    percentage saturation.
    D.
    none of these.

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