Isotherm on an enthalpy-concentration diagram, for an ideal solution will be a:
A. Straight line
B. Sine curve
C. Parabola
D. Hyperbola
In a reversible process:
A. Tds = dE + dW
B. dE – dW = Tds
C. dW – dE = Tds
D. Tds – dW + dE >0
A system in which there is exchange of energy but not of mass, is called a/an _____ system:
A. Isolated
B. Open
C. Insulated
D. Closed
The efficiency of an Otto engine compared to that of a diesel engine, for the same compression ratio will be:
A. More
B. Less
C. Same
D. Data insufficient to predict
With increase in pressure (above atmospheric pressure), the Cp of a gas:
A. Increases
B. Decreases
C. Remains unchanged
D. First decreases and then increases
PVy = constant, holds good for an isentropic process, which is:
A. Reversible and isothermal
B. Isothermal and irreversible
C. Reversible and adiabatic
D. Adiabatic and irreversible
As the temperature is lowered towards the absolute zero, the value of ∂(ΔF)/∂T, then approaches:
A. Unity
B. Zero
C. That of the heat of reaction
D. Infinity
Which of the following is a thermodynamic property of a system:
A. Concentration
B. Mass
C. Temperature
D. Entropy
The amount of heat required to decompose a compound into its elements is ____ the heat of formation of that compound from its elements:
A. Less than
B. More than
C. Same as
D. Not related to
Gases are cooled in Joule-Thomson expansion, when it is _____ inversion temperature:
A. Below
B. At
C. Above
D. Either B. or C.
