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In thermodynamics, a process is called r...

In thermodynamics, a process is called reversible when

A

Surroundings and system change into each other

B

There is no boundary between system and surroundings

C

The surroundings are always in equilibrium with the system

D

The system changes into the surroundings spontaneously

Text Solution

Verified by Experts

The correct Answer is:
C
In a reversible process, the driving and the opposite forces are nearly equal, hence the system and the surroundings are nearly equal, hence the system and the surroundings always remain in equilibrium with each other.
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How many statement are false ? (i) Thermodynamics is concerned with total energy of the system. (ii) 1^(st) law of thermodynamics can be applied on the individual particle enclosed in vessel. (iii) Many thermodynamic properties can not be measured absolutely, so change in thermodynamics property is required for calculation. (iv) Feasibility of any chemical reaction can not be explained by thermodynamics. (v) When surrounding is always in equilibrium with the system, the process called reversible. (vi) Thermodynamics predict the time of attain the equilibrium