A. Pressure
B. Temperature
C. Both A & B
D. Neither A nor B
✅ The correct answer is option C.
Chemical Engineering MCQs
With increase in temperature, the internal energy of a substance
A. Increases
B. Decreases
C. Remains unchanged
D. May increase or decrease; depends on the substance
✅ The correct answer is option A.
Chemical potential is a/an
A. Extensive property
B. Intensive property
C. Force which drives the chemical system to equilibrium
D. Both B and C
✅ The correct answer is option D.
The ammonia synthesis reaction represented by N₂ + 3H₂ ⇋ 2NH₃ ; ΔH = – 22.4 kcal, is
A. Endothermic
B. Exothermic
C. Isothermal
D. Adiabatic
✅ The correct answer is option B.
Compound having large heat of formation is
A. More stable
B. Less stable
C. Not at all stable (like nascent O₂)
D. Either more or less stable ; depends on the compound
✅ The correct answer is option A.
Degress of freedom at triple point will be
A. 0
B. 1
C. 2
D. 3
✅ The correct answer is option A.
First law of thermodynamics is mathematically stated as
A. dQ = dE + dW
B. dQ = dE – dW
C. dE = dQ + dW
D. dW = dQ + dE
✅ The correct answer is option A.
During adiabatic expansion of gas
A. Pressure remains constant
B. Pressure is increased
C. Temperature remains constant
D. None of these
✅ The correct answer is option D.
The equation DU = Tds – PdV is applicable to infinitesimal changes occuring in
A. An open system of constant composition
B. A closed system of constant composition
C. An open system with changes in composition
D. A closed system with changes in composition
✅ The correct answer is option D.
Change of state namely evaportation condensation, freezing and melting is an __________ process.
A. Isothermal
B. Adiabatic
C. Isobaric
D. Isochoric
✅ The correct answer is option A.