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First Law of Thermodynamics

Question

Which of the following statements are correct as per IUPAC sign convention?
The work done by the system on the surrounding is negative
The work done by the surrounding on the system is positive
The heat absorbed by the surrounding from the system is positive
The heat absorbed by the system from the surrounding is positive

A

The work done by the system on the surrounding is negative

B

The heat absorbed by the system from the surrounding is positive

C

The work done by the surrounding on the system is positive

D

The heat absorbed by the surrounding from the system is positive

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Solution

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work done on system = +ve
work done by the system = -ve

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