A. Boyle
B. Inversion
C. Critical
D. Reduced
✅ The correct answer is option A.
Chemical Engineering MCQs
A cylinder contains 640 gm of liquid oxygen. The volume occupied (in litres) by the oxygen, when it is released and brought to standard conditions (0°C, 760 mm Hg) will be __________ litres.
A. 448
B. 224
C. 22.4
D. Data insufficient; can’t be computed
✅ The correct answer is option A.
In Joule-Thomson porous plug experiment, the
A. Enthalpy does not remain constant
B. Entire apparatus is exposed to surroundings
C. Temperature remains constant
D. None of these
✅ The correct answer is option D.
(∂H/∂T)p is the mathematical expression for
A. CV
B. Entropy change
C. Gibbs free energy
D. None of these
✅ The correct answer is option D.
For the gaseous phase chemical reaction, C₂H₄(g) + H₂O(g) ⟷ C₂H₅OH(g), the equilibrium conversion does not depend on the
A. Steam to ethylene ratio
B. Temperature
C. Pressure
D. None of these
✅ The correct answer is option D.
All gases during throttling process at atmospheric temperature and pressure show a cooling effect except
A. CO₂
B. H₂
C. O₂
D. N₂
✅ The correct answer is option B.
Which of the following is not a reversible process ?
A. Expansion of an ideal gas against constant pressure
B. Atmospheric pressure vaporisation of water at 100°C
C. Solution of NaCl in water at 50°C
D. None of these
✅ The correct answer is option C.
A solid metallic block weighing 5 kg has an initial temperature of 500°C. 40 kg of water initially at 25°C is contained in a perfectly insulated tank. The metallic block is brought into contact with water. Both of them come to equilibrium. Specific heat of block material is 0.4 kJ.kg⁻¹. K⁻¹. Ignoring the effect of expansion and contraction and also the heat capacity to tank, the total entropy change in kJ.kg⁻¹ , K⁻¹ is
A. -1.87
B. 0
C. 1.26
D. 3.91
✅ The correct answer is option B.
Heat is added at constant temperature in an ideal __________ cycle.
A. Stirling
B. Brayton
C. Rankine
D. None of these
✅ The correct answer is option A.
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
✅ The correct answer is option B.