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The internal energy of a substance:...

The internal energy of a substance:

A

Increases with increase in temperature

B

Decreases with increase in temperature

C

Can be calculated by the relation E = `mc^(2)`

D

Remains unaffected with change in temperature

Text Solution

Verified by Experts

The correct Answer is:
A
`Delta E` increases with temperature.
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Knowledge Check

  • The internal energy of a system is

    A
    state function
    B
    path property
    C
    qualitative property
    D
    intensive property

  • Statement: Internal energy of a system is an extensive property. Explanation: The internal energy of a system depends upon the amount and physical state of the susbtance.

    A
    `S` is correct but `E` is wrong.
    B
    `S` is wrong but `E` are correct and `E`
    C
    Both `S` and `E` are correct but `E` is correct explanation of `S`.
    D
    Both `S` and `E` are correct but `E` is not correct explanation of `S`.

  • Assertion : The internal energy of an isothermal process does not change. Reason : The internal energy of a system depends only on pressure of the system.

    A
    If both assertion and reason are true and the reason is the correct explanation of the assertion.
    B
    If both assertion and reason are true but reason is not the correct explanation of t he assertion.
    C
    If assertion is true but reason is false.
    D
    If the assertion and reason both are false
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