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State and Path Variables, Functions

Select the co...

Question

Select the correct set of statement/s:
I.Work done by the surrounding in case of infinite stage expansion is more than single stage expansion.
II.Irreversible work is always greater than reversible work.
III.On an ideal gas in case of single stage expansion and compression system as well as surrounding are restored bank to their original states
IV.If gas is in thermodynamic equilibrium is taken from state A to state B, by four successive single stage expansions.Then we can plot 4 points on the P.V indicator diagram.

A

II

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B

I,II,III,IV

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C

II,IV

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D

I,II,IV

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Solution

The correct option is A II

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Similar questions

Q. Select the incorrect set of elements:
I. Work done by the surrounding in case of infinite stage expansion is more than single expansion
II. Ineversible work is always greater than reversible work
III. On an ideal gas in case of single stage expansion and compression system as well as surrounding are restored back to their original states
IV. If gas is in thermodynamic equilibrium is taken from state

A

B

, by four successive single stage expansions. Then we can plot

4

points on the P.V indicator diagram

Q. Work done on the gas in single stage compression is:

Q. An ideal gas undergoes a reversible isothermal expansion from state

I

I I

followed by a reversible adiabatic expansion from state

I I

I I I

The correct plot(s) representing the changes from state

I

I I I

(p : pressure, V : volume, T : temperature, H : enthalpy, S : entropy)

Which of the following statement(s) is/are incorrect?

Statement-1: Reversible isothermal compression of an ideal gas represents the limiting minimum value of the work done (|w|) by the surrounding on the system.

Statement-2: In an irreversible process, the cyclic integral of work is not zero.

Statement-3: For thermodynamic changes in adiabatic process

T^{(\frac{C_{2 x}}{R})}

{△ S}_{s y s t e m}

is zero for reversible adiabatic expansion of an ideal gas.

Q. An ideal gas undergoes isothermal expansion from (

10 a t m

1 L

1 a t m

10 L

) either by path-I (infinite stage expansion) or by path II (first against

5 a t m

and then against

1 a t m

). The value of

(\frac{q_{p a t h - I}}{q_{p a t h - I I}})

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