A. Pressure
B. Composition
C. Temperature
D. All of the above
✅ The correct answer is option D.
Chemical Engineering MCQs
For a thermodynamic system containing ‘x’ chemical species, the maximum number of phases that can co-exist at equilibrium is
A. X
B. X + 1
C. X + 2
D. X + 3
✅ The correct answer is option C.
4 kg moles of an ideal gas expands in vacuum spontaneously. The work done is
A. 4 J
B. ∞
C. 0
D. 8 J
✅ The correct answer is option C.
What is the number of degree of freedom for a system of two miscible non-reacting species in vapor-liquid equilibrium forming an azeotrope?
A. 3
B. 2
C. 1
D. 0
✅ The correct answer is option C.
A liquid under pressure greater than its vapour pressure for the temperature involved is called a __________ liquid.
A. Subcooled
B. Saturated
C. Non-solidifiable
D. None of these
✅ The correct answer is option A.
On a P-V diagram of an ideal gas, suppose a reversible adiabatic line intersects a reversible isothermal line at point A. Then at a point A, the slope of the reversible adiabatic line (∂P/∂V)S and the slope of the reversible isothermal line (∂P/∂V)T are related as (where, y = Cp/Cv) )
A. (∂P/∂V)S = (∂P/∂V)T
B. (∂P/∂V)S = [(∂P/∂V)T]Y
C. (∂P/∂V)S = y(∂P/∂V)T
D. (∂P/∂V)S = 1/y(∂P/∂V)T
✅ The correct answer is option C.
Melting of wax is accompanied with __________ in entropy.
A. Increase
B. Decrease
C. No change
D. None of these
✅ The correct answer is option A.
If the molar heat capacities (Cp or Cv) of the reactants and products of a chemical reaction are identical, then, with the increase in temperature, the heat of reaction will
A. Increase
B. Decrease
C. Remain unaltered
D. Increase or decrease ; depends on the particular reaction
✅ The correct answer is option C.
Fugacity and pressure are numerically equal, when the gas is
A. In standard state
B. At high pressure
C. At low temperature
D. In ideal state
✅ The correct answer is option D.
Compressibility factor for almost all the gases are approximately same at the same
A. Pressure and temperature
B. Reduced pressure and reduced temperature
C. Critical pressure and critical temperature
D. None of these
✅ The correct answer is option B.