A. Decrease in temperature
B. Increase in temperature
C. No change in temperature
D. Change in temperature which is a function of composition
✅ The correct answer is option B.
Chemical Engineering MCQs
One ton of refrigeration is defined as the heat rate corresponding to melting of one ton of ice in one
A. Hour
B. Day
C. Minute
D. Second
✅ The correct answer is option B.
First law of thermodynamics deals with the
A. Direction of energy transfer
B. Reversible processes only
C. Irreversible processes only
D. None of these
✅ The correct answer is option A.
For an ideal liquid solution, which of the following is unity?
A. Activity
B. Fugacity
C. Activity co-efficient
D. Fugacity co-efficient
✅ The correct answer is option C.
The compressibility factor of a gas is given by (where, V₁ = actual volume of the gas V₂ = gas volume predicted by ideal gas law )
A. V₁/V₂
B. V₂/V₁
C. V₁-V₂
D. V₁.V₂
✅ The correct answer is option A.
The absolute entropy for all crystalline substances at absolute zero temperature is
A. Zero
B. Negative
C. More than zero
D. Indeterminate
✅ The correct answer is option A.
Choose the condition that must be specified in order to liquify CO₂ (triple point for CO₂ is – 57°C and 5.2 atm).
A. Pressure must be kept below 5.2 atm
B. Temperature must be kept above – 57°C
C. Pressure must be kept below 5.2 atm. and temperature must be kept above 57°C
D. Pressure and temperature must be kept below 5.2 atm. and – 57°C respectively
✅ The correct answer is option D.
Number of components (C), phase (P) and degrees of freedom (F) are related by Gibbs phase rule as
A. P + F – C = 2
B. C = P – F + 2
C. F = C – P – 2
D. P = F – C – 2
✅ The correct answer is option A.
Normal temperature and pressure (N.T.P.) corresponds to
A. 0°C and 760 mm Hg
B. 15°C and 760 mm Hg
C. 20°C and 760 mm Hg
D. 0°C and 1 kgf/cm²
✅ The correct answer is option C.
Degree of freedom of a system consisting of a gaseous mixture of H₂ and NH₃ will be
A. 0
B. 1
C. 2
D. 3
✅ The correct answer is option D.