Practice Test: Question Set - 16
1. (∂T/∂P)H is the mathematical expression for
- (A) Specific heat at constant pressure (Cp)
- (B) Specific heat at constant volume (Cv)
- (C) Joule-Thompson co-efficient
- (D) None of these
2. Pick out the Clausius-Clapeyron equation from the following:
- (A) dP/dT = ∆H/T∆V
- (B) ln P = - (∆H/RT)
+ constant
- (C) ∆F = ∆H + T [∂(∆F)/∂T]P
- (D) None of these
3. Throttling process is a/an __________ process.
- (A) Reversible and isothermal
- (B) Irreversible and constant enthalpy
- (C) Reversible and constant entropy
- (D) Reversible and constant enthalpy
4. Internal energy change of a system over one complete cycle in a cyclic process is
- (A) Zero
- (B) +ve
- (C) -ve
- (D) Dependent on the path
5. Cv for an ideal gas
- (A) Does not depend upon temperature
- (B) Is independent of pressure only
- (C) Is independent of volume only
- (D) Is independent of both pressure and volume
6. Generation of heat by friction is an example of a/an __________ change.
- (A) Isothermal
- (B) Irreversible
- (C) Adiabatic
- (D) Reversible
7. The internal energy of an incompressible fluid depends upon its
- (A) Pressure
- (B) Temperature
- (C) Both (a) & (b)
- (D) Neither (a) nor (b)
8. The variation of heat of reaction with temperature at constant pressure is given by the __________ law.
- (A) Kelvin's
- (B) Antoine’s
- (C) Kirchoff’s
- (D) None of these
9. In a working refrigerator, the value of COP is always
- (A) 0
- (B) < 0
- (C) < 1
- (D) > 1
10. The unit of fugacity is the same as that of the
- (A) Pressure
- (B) Temperature
- (C) Volume
- (D) Molar concentration
11. Ideal refrigeration cycle is
- (A) Same as Carnot cycle
- (B) Same as reverse Carnot cycle
- (C) Dependent on the refrigerant's properties
- (D) The least efficient of all refrigeration processes
12. Variation of equilibrium pressure with temperature for any two phases of a given substances is given by the __________ equation.
- (A) Gibbs-Duhem
- (B) Maxwell's
- (C) Clapeyron
- (D) None of these
13. When a system is in equilibrium for all possible processes, the differential or finite change of entropy is
- (A) < 0
- (B) > 0
- (C) = 0
- (D) None of these
14. Entropy of an ideal gas depends upon its
- (A) Pressure
- (B) Temperature
- (C) Both (a) & (b)
- (D) Neither (a) nor (b)
15. An irreversible process
- (A) Is the analog of linear frictionless motion in machines
- (B) Is an idealized visualization of behavior of a system
- (C) Yields the maximum amount of work
- (D) Yields an amount of work less than that of a reversible process
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