In case of a close thermodynamic system, there is ______________ across the boundaries?

Related Mcqs:

1. The thermodynamic law, PVy = constant, is not applicable in case of______________?

   A. Ideal compression of air
   B. Free expansion of an ideal gas
   C. Adiabatic expansion of steam in a turbine
   D. Adiabatic compression of a perfect gas

2. A thermodynamic system is taken from state A to B along ACB and is brought back to A along BDA as shown below in the P-V diagram. The net work done during the complete cycle is given by the area covered by_________________?

   A. P1ACBP2P1
   B. ACBB1A1A
   C. ACBDA
   D. ADBB1A1A

3. For a thermodynamic system containing ‘x’ chemical species, the maximum number of phases that can co-exist at equilibrium is_________________?

   A. x
   B. x + 1
   C. x + 2
   D. x + 3

4. Measurement of thermodynamic property of temperature is facilitated by ____________ law of thermodynamics?

   A. 1st
   B. Zeroth
   C. 3rd
   D. None of these

5. Which law of the thermodynamics provides basis for measuring the thermodynamic property ?

   A. First law
   B. Zeroth law
   C. Third law
   D. Second law

6. Which of the following is a thermodynamic property of a system ?

   A. Concentration
   B. Mass
   C. Temperature
   D. Entropy

7. Extensive properties of a thermodynamic system depend upon the _____________ of the system?

   A. Specific volume
   B. Temperature
   C. Mass
   D. Pressure

8. The only suitable method for hardening the low carbon steel is case hardening. Which of the following is a case hardening process ?

   A. Cyaniding
   B. Sherardizing
   C. Spheroidising
   D. None of these

9. Internal energy is equal to the heat absorbed in case of a/an ______________ process?

   A. Constant volume
   B. Polytropic
   C. Adiabatic
   D. Constant pressure

10. High pressure steam is expanded adiabatically and reversibly through a well insulated turbine, which produces some shaft work. If the enthalpy change and entropy change across the turbine are represented by ΔH and ΔS respectively for this process ?

    A. Δ H = 0 and ΔS = 0
    B. Δ H ≠ 0 and ΔS = 0
    C. Δ H ≠ 0 and ΔS ≠ 0
    D. Δ H = 0 and ΔS ≠ 0