Properties of substances like pressure, temperature and density, in thermodynamic coordinates are

path function

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point function

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cyclic function

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real function

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Solution

The correct option is D point function
Point Function: They depend on the state only, and not on how a system reaches that state. They are also known as state functions. All properties of a substance are point functions. For example- pressure, temperature and density.
In contrast,
Path function: Their magnitudes depend on the path followed during a process as well as the end states. For example- work done in moving from one point to the other.

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Similar questions

A thermodynamic state function is a quantity
(i) used to determine heat changes
(ii)whose value is independent of path
(iii) used to determine pressure volume work
(iv) whose value depends on temperature only.

Q. Assertion :Pressure, volume and temperature are all extensive properties. Reason: Extensive properties depend upon the amount and nature of the substance.

Choose the correct answer. A thermodynamic state function is a quantity

(i) used to determine heat changes

(ii) whose value is independent of path

(iii) used to determine pressure volume work

(iv) whose value depends on temperature only.

Which of the following thermodynamic variables is a path function?

Q. Assertion :Between two thermodynamic states, the value of

(Q - W)

is constant for any process. Reason:

Q

and

W

are path functions.

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