A. Always greater than one
B. Same at the same reduced temperature
C. Same at the same reduced pressure
D. Both B & C
✅ The correct answer is option D.
Chemical Engineering MCQs
When a system in equilibrium is subjected to a change in temperature, pressure or concentration, the equilibrium is displaced in a direction which tends to undo the effect of the change. This is called the
A. Le-Chatelier principle
B. Kopp’s rule
C. Law of corresponding state
D. Arrehenius hypothesis
✅ The correct answer is option A.
Trouton’s ratio is given by (where λb, = molal heat of vaporisation of a substance at its normal boiling point, kcal/kmol Tb = normal boiling point, °K )
A. λb/Tb
B. Tb/λb
C. √(λb/Tb)
D. √(Tb/λb)
✅ The correct answer is option A.
Which of the following is true for Virial equation of state?
A. Virial co-efficients are universal constants
B. Virial co-efficients
C. Virial co-efficients are function of temperature only
D. For some gases, Virial equations and ideal gas equations are the same
✅ The correct answer is option C.
Domestic refrigerator usually works on the __________ refrigeration cycle.
A. Carnot
B. Air
C. Absorption
D. Vapour-ejection
✅ The correct answer is option C.
Grams of butane (C₄H₁₀) formed by the liquefaction of 448 litres of the gas (measured at (STP) would be
A. 580
B. 640
C. 1160
D. Data insufficient; can’t be computed
✅ The correct answer is option C.
In the decomposition of PCl5 represented by, PCl5 ⇋ PCl3 + Cl₂, decrease in the pressure of the system will __________ the degree of dissociation of PCl5.
A. Increase
B. Decrease
C. Not alter
D. None of these
✅ The correct answer is option A.
Number of phases in a colloidal system are
A. 1
B. 2
C. 3
D. 4
✅ The correct answer is option B.
__________ law of thermodynamics ascertains the direction of a particular spontaneous process.
A. Zeroth
B. First
C. Second
D. Third
✅ The correct answer is option C.
1/V (∂V/∂T)p is the mathematical expression
A. Joule-Thomson co-efficient
B. Specific heat at constant pressure (Cp)
C. Co-efficient of thermal expansion
D. Specific heat at constant volume (CV)
✅ The correct answer is option C.