Engineering Thermodynamics
If a gas vapour is allowed to expand through a very minute aperture, then such a process is known as

Throttling
Adiabatic expansion
Hyperbolic expansion
Free expansion

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Engineering Thermodynamics
Extensive property of a system is one whose value

Is not dependent on the path followed but on the state
Is dependent on the path followed and not on the state
Depends on the mass of the system like volume
Does not depend on the mass of the system, like temperature, pressure, etc.

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