Engineering Thermodynamics
The condition of perfect vacuum, i.e., absolute zero pressure can be attained at

A temperature of 273 °K
A negative pressure and 0°C temperature
A temperature of 0°C
A temperature of - 273.16°C

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Engineering Thermodynamics
Extensive property of a system is one whose value

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

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