A. Isometric
B. Polytropic
C. Isentropic
D. Isobaric
✅ The correct answer is option B.
Chemical Engineering MCQs
For spontaneous changes in an isolated system (S = entropy)
A. Ds = 0
B. Ds <0
C. Ds > 0
D. Ds = Constant
✅ The correct answer is option C.
The four properties of a system viz. P, V, T, S are related by __________ equation.
A. Gibbs-Duhem
B. Gibbs-Helmholtz
C. Maxwell’s
D. None of these
✅ The correct answer is option C.
In case of dry spinning of polymers, the polymer solution in a volatile solvent is forced through the spinnerates into a warm air chamber, where the solvent evaporates leaving behind the polymer in the filament form. Dry spinning is used for __________ fibres.
polythene
PVC
rayon
polyvinyl acetate
✅ The correct answer is option B.
Adipic acid is an intermediate in the manufacture of
perspex
nylon-66
polystyrene
bakelite
✅ The correct answer is option B.
Which of the following has the minimum value of COP for a given refrigeration effect?
A. Reverse Carnot cycle
B. Ordinary vapour-compression cycle
C. Vapour-compression process with a reversible expansion engine
D. Air refrigeration cycle
✅ The correct answer is option D.
Gibbs free energy of mixing at constant pressure and temperature is always
A. 0
B. ∞
C. + ve
D. – ve
✅ The correct answer is option D.
What is the ratio of adiabatic compressibility to isothermal compressibility?
A. 1
B. < 1
C. > 1
D. >> 1
✅ The correct answer is option B.
A Carnot cycle consists of the following steps :
A. Two isothermals and two isentropics
B. Two isobarics and two isothermals
C. Two isochorics and two isobarics
D. Two isothermals and two isochorics
✅ The correct answer is option A.
An isentropic process is carried out at constant
A. Volume
B. Pressure
C. Temperature
D. All of the above
✅ The correct answer is option A.