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Chemical Engineering Thermodynamics - Section 1
Chemical Engineering Thermodynamics - Section 2
Chemical Engineering Thermodynamics - Section 3
Chemical Engineering Thermodynamics - Section 4
Chemical Engineering Thermodynamics - Section 5
Chemical Engineering Thermodynamics - Section 6
Chemical Engineering Thermodynamics - Section 7
Chemical Engineering Thermodynamics - Section 8
Chemical Engineering Thermodynamics - Section-9

  1. Gibbs free energy (G) is represented by, G = H - TS, whereas Helmholtz free energy, (A) is given by, A = E - TS. Which of the following is the Gibbs-Helmholtz equation

    2. A.
    B.
    C.
    both (a) and (b)
    D.
    neither (a) nor (b)

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  2. Which of the following is an undesirable characteristics of a refrigerant ?

    3. A.
    It should be non-explosive.
    B.
    It should have a sub-atmospheric vapor pressure at the temperature in refrigerator coils.
    C.
    Its vapor pressure at the condenser temperature should be very high.
    D.
    None of these.

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  3. "The rate at which a substance reacts is proportional to its active mass and the rate of a chemical reaction is proportional to the product of active masses of the reacting substances". This is the

    4. A.
    Lewis-Randall rule.
    B.
    statement of Vant-Hoff equation.
    C.
    Le-Chatelier's principle.
    D.
    none of these.

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  4. What is the ratio of adiabatic compressibility to isothermal compressibility ?

    5. A.
    1
    B.
    < 1
    C.
    > 1
    D.
    >> 1

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  5. The absolute entropy for all crystalline substances at absolute zero temperature is

    6. A.
    zero
    B.
    negative
    C.
    more than zero
    D.
    indeterminate

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  6. Pick out the wrong statement.

    7. A.
    Phase rule variables are intensive properties.
    B.
    Heat and work are both state function.
    C.
    The work done by expansion of a gas in vacuum is zero.
    D.
    CP and CV are state function.

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  7. Compressibility factor of a gas is

    8. A.
    not a function of its pressure.
    B.
    not a function of its nature.
    C.
    not a function of its temperature.
    D.
    unity, if it follows PV = nRT.

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  8. Which of the following is not an extensive property ?

    9. A.
    Free energy
    B.
    Entropy
    C.
    Refractive index
    D.
    None of these

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  9. Forward reaction will be favoured for the exothermic reaction, represented by CO + H2O CO2 + H2, by

    10. A.
    low temperature and high pressure.
    B.
    low temperature and low pressure.
    C.
    high temperature and high pressure.
    D.
    high temperature and low pressure.

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  10. Enthalpy of a gas depends upon its

    11. A.
    temperature
    B.
    mass
    C.
    volume
    D.
    pressure

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