Engineering Thermodynamics
A heat exchange process in which the product of pressure and volume remains constant is known as

Throttling process
Heat exchange process
Isentropic process
Hyperbolic process

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Engineering Thermodynamics
According to Dalton's law, the total pressure of the mixture of gases is equal to

Sum of the partial pressures of all divided by average molecular weight
Greater of the partial pressures of all
Sum of the partial pressures of all
Average of the partial pressures of all

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Engineering Thermodynamics
According to First law of thermodynamics,

Work-done by a system is equal to the heat transferred by the system
Total energy of a system remains constant
Total internal energy of a system during a process remains constant
Internal energy, enthalpy and entropy during a process remain constant

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