thermodynamic process and work done questions with solutions

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• MCQeasyThermodynamicsthermodynamic process and work done

  The equilibrium state of a thermodynamic system is described by: (I) Pressure, (II) Total heat, (III) Temperature, (IV) Volume, (V) Work done. Choose the most appropriate answer:

  Options

  • Option A

    (I), (II) and (V) only

  • Option B

    (II), (III) and (IV) only

  • Option C

    (I), (II) and (III) only

  • Option D

    (I), (III) and (IV) only

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• MCQeasyThermodynamicsthermodynamic process and work done

  In which of the following processes is heat neither absorbed nor released by a system?

  Options

  • Option A

    Adiabatic

  • Option B

    Isobaric

  • Option C

    Isochoric

  • Option D

    Isothermal

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• MCQeasyThermodynamicsthermodynamic process and work done

  A thermodynamic system is taken through the cycle abcda shown in the P–V diagram: a = (100 cm³, 100 kPa), b = (400 cm³, 100 kPa), c = (400 cm³, 300 kPa), and d = (100 cm³, 300 kPa). The work done by the gas along path bc is:

  Options

  • Option A

    30 J

  • Option B

    -90 J

  • Option C

    -60 J

  • Option D

    zero

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• MCQmediumThermodynamicsthermodynamic process and work done

  Which of the following relations does NOT give the equation of an adiabatic process, where γ = Cₚ/Cᵥ?

  Options

  • Option A

    P⁽¹⁻ᵞ⁾Tᵞ = constant

  • Option B

    PVᵞ = constant

  • Option C

    TV⁽ᵞ⁻¹⁾ = constant

  • Option D

    PᵞT⁽¹⁻ᵞ⁾ = constant

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• MCQmediumThermodynamicsthermodynamic process and work done

  A mass of diatomic gas (γ = 1.4) at a pressure of 2 atmospheres is compressed adiabatically so that its temperature rises from 27°C to 927°C. The pressure of the gas in the final state is:

  Options

  • Option A

    8 atm

  • Option B

    28 atm

  • Option C

    68.7 atm

  • Option D

    256 atm

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• MCQmediumThermodynamicsthermodynamic process and work done

  An ideal gas undergoes four different processes from the same initial state as shown in the P–V diagram. The processes are adiabatic, isothermal, isobaric and isochoric. Curve 1 is vertical, curve 4 is horizontal, and curves 2 and 3 fall as V increases. Which curve represents the adiabatic process?

  Options

  • Option A

    1

  • Option B

    2

  • Option C

    3

  • Option D

    4

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• MCQmediumThermodynamicsthermodynamic process and work done

  A monoatomic gas at pressure P₁, having a volume V, expands isothermally to volume 2V and then adiabatically to volume 16V. The final pressure of the gas is (take γ = 5/3):

  Options

  • Option A

    64P₁

  • Option B

    32P₁

  • Option C

    P₁/64

  • Option D

    16P₁

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• MCQmediumThermodynamicsthermodynamic process and work done

  An ideal gas is compressed to half its initial volume by several possible processes. Which process results in the maximum work done ON the gas?

  Options

  • Option A

    Adiabatic

  • Option B

    Isobaric

  • Option C

    Isochoric

  • Option D

    Isothermal

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  AIPMT 2015NEET Previous Year

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• MCQeasyThermodynamicsthermodynamic process and work done

  In a thermodynamic process, which of the following statements is NOT true?

  Options

  • Option A

    In an adiabatic process, the system is insulated from the surroundings.

  • Option B

    In an isochoric process, pressure remains constant.

  • Option C

    In an isothermal process, temperature remains constant.

  • Option D

    In a reversible adiabatic process of an ideal gas, PVᵞ = constant.

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• MCQmediumThermodynamicsthermodynamic process and work done

  Thermodynamic processes I–IV are shown on the P–V diagram. Match Column-I with Column-II. Column-I: (a) Process I; (b) Process II; (c) Process III; (d) Process IV. Column-II: (i) Adiabatic; (ii) Isobaric; (iii) Isochoric; (iv) Isothermal.

  Options

  • Option A

    (a)–(i), (b)–(iii), (c)–(iv), (d)–(ii)

  • Option B

    (a)–(iii), (b)–(i), (c)–(iv), (d)–(ii)

  • Option C

    (a)–(iii), (b)–(iv), (c)–(ii), (d)–(i)

  • Option D

    (a)–(iv), (b)–(ii), (c)–(i), (d)–(iii)

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