Basics of Chemical Engineering Thermodynamics pdf Test Questions - Set 08 - ObjectiveBooks
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Basics of Chemical Engineering Thermodynamics pdf Test Questions - Set 08

Practice Test: Question Set - 08


1. The reaction A (l) → R(g) is allowed to reach equilibrium conditions in an autoclave. At equilibrium, there are two phases, one a pure liquid phase of A and the other a vapor phase of AR and S. Initially A alone is present. The numbers of degrees of freedom are:
    (A) 1
    (B) 2
    (C) 3
    (D) 0

2. For an isothermal reversible compression of an ideal gas
    (A) Only ΔE = 0
    (B) Only ΔH =0
    (C) ΔE = ΔH = 0
    (D) dQ = dE

3. Air enters an adiabatic compressor at 300K. The exit temperature for a compression ratio of 3, assuming air to be an ideal gas (Y = Cp/Cv = 7/5) and the process to be reversible, is
    (A) 300 × (32/7)
    (B) 300 × (33/5)
    (C) 300 × (333/7)
    (D) 300 × (35/7)

4. Solid and liquid phases of a substance are in equilibrium at the
    (A) Critical temperature
    (B) Melting point
    (C) Freezing point
    (D) Both (b) and (c)

5. What is the ratio of adiabatic compressibility to isothermal compressibility?
    (A) 1
    (B) < 1
    (C) > 1
    (D) >> 1

6. Internal energy of an ideal gas
    (A) Increases with increase in pressure
    (B) Decreases with increase in temperature
    (C) Is independent of temperature
    (D) None of these

7. "Dry ice" is
    (A) Moisture free ice
    (B) Solid helium
    (C) Solid carbon dioxide
    (D) None of these

8. Requisites of a reversible process is that the
    (A) System and surroundings pressure be equal
    (B) Friction in the system should be absent
    (C) System and surroundings temperature be equal
    (D) None of these

9. Henry's law is closely obeyed by a gas, when its __________ is extremely high.
    (A) Pressure
    (B) Solubility
    (C) Temperature
    (D) None of these

10. The root mean square speed of molecules of a gas is equal to (where, m = mass of the molecule K = Boltzmann’s constant, T = absolute temperature)
    (A) √(2KT/m)
    (B) √(3KT/m)
    (C) √(6KT/m)
    (D) 3KT/m

11. In the equation, PVn = Constant, if the value of n = 0, then it represents a reversible __________ process.
    (A) Isobaric
    (B) Isothermal
    (C) Isentropic
    (D) Isometric

12. Normal temperature and pressure (N.T.P.) corresponds to
    (A) 0°C and 760 mm Hg
    (B) 15°C and 760 mm Hg
    (C) 20°C and 760 mm Hg
    (D) 0°C and 1 kgf/cm2

13. Which of the following is an extensive property of a system?
    (A) Heat capacity
    (B) Molal heat capacity
    (C) Pressure
    (D) Concentration

14. Melting of ice exemplifies a/an
    (A) Adiabatic process
    (B) Endothermic reaction
    (C) Exothermic reaction
    (D) Process involving a chemical reaction

15. In a homogeneous solution, the fugacity of a component depends upon the
    (A) Pressure
    (B) Composition
    (C) Temperature
    (D) All (a), (b) and (c)

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