Engineering Thermodynamics
For a perfect gas, according to Boyle’s law (where P = Absolute pressure, V = Volume and T = Absolute temperature)

P v = constant, if T is kept constant
P/T = constant, if v is kept constant
T/P = constant, if v is kept constant
V/T = constant, if p is kept constant

ANSWER DOWNLOAD EXAMIANS APP

Engineering Thermodynamics
According to First law of thermodynamics,

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

ANSWER DOWNLOAD EXAMIANS APP