In a closed system, the change in enthalpy will be equal to the heat transferred when a reversible process takes place at constant
A.Volume
B.Pressure
C.Temperature
D.Entropy
E.Internal energy
Category: Thermodynamics Mcqs
In an adiabatic compression the decrease in volume is associated with
A.Decrease in temperature and increase in pressure
B.Decrease in temperature and decrease in pressure
C.Increase in temperature and decrease in temperature
D.Increase in temperature and increase in pressure
A control volume refers to
A.fixed region is space
B.a difinite mass
C.a closed system
D.an isolated system
The charge in a Diesel engine consists of
A.Air + diesel + lubricating oil
B.Air + diesel
C.Air + lubricating oil
D.Diesel + lubricating oil
E.Air
When two gases are not under the same conditions of temperature and pressure, upon mixing there will be
A.loss of entropy to the surroundings
B.exchange of entropy between the two gases
C.increase in available heat but decrease in unavailable heat
D.None of the above
The vapour pressure of water at 30?C in pascals is
A.0.44
B.7.18
C.223
D.431.5
E.4315
The solubility of a gas in a liquid at small concentration is represented by
A.Henry’s law
B.Roults law
C.Claperyon equation
D.Van der Waal’s equation
E.Joules equation
In a thermal power plant thermodynamic cycle used is
A.Erricson
B.Brayton
C.Joule
D.Carnot
E.Rankine
