4151. The expression, nCv(T₂ – T₁), is for the __________ of an ideal gas.
A. Work done under adiabatic condition
B. Co-efficient of thermal expansion
C. Compressibility
D. None of these
✅ The correct answer is option A.
Chemical Engineering
Prepare with the best Chemical Engineering MCQs with answers and detailed explanations for exams and job tests. Our collection covers key topics such as chemical process calculations, thermodynamics, fluid mechanics, heat transfer, mass transfer, reaction engineering, instrumentation, and plant design. These Chemical Engineering multiple-choice questions are ideal for students, competitive exam aspirants, and professionals preparing for NTS, PPSC, FPSC, PEC exams, GATE, university entry tests, and job interviews. Practice online with updated Chemical Engineering MCQs to strengthen your concepts and improve technical problem-solving skills.
4152. Adiabatic compression of a saturated water vapour makes it
A. Supersaturated
B. Superheated
C. Both A and B
D. Neither A nor B
✅ The correct answer is option B.
4153. Which of the following is not affected by temperature changes?
A. Fugacity
B. Activity co-efficient
C. Free energy
D. None of these
✅ The correct answer is option D.
4154. Vapour which is at a pressure smaller than the saturation pressure for the temperature involved is called a __________ vapour.
A. Superheated
B. Desuperheated
C. Non-condensable
D. None of these
✅ The correct answer is option A.
4155. Near their critical temperatures, all gases occupy volumes __________ that of the ideal gas.
A. Less than
B. Same as
C. More than
D. Half
✅ The correct answer is option A.
4156. A refrigerator may be termed as a
A. Heat pump
B. Heat engine
C. Carnot engine
D. None of these
✅ The correct answer is option A.
4157. The second law of thermodynamics states that
A. The energy change of a system undergoing any reversible process is zero
B. It is not possible to transfer heat from a lower temperature to a higher temperature
C. The total energy of system and surrounding remains the same
D. None of the above
✅ The correct answer is option D.
4158. The quantitative effect of temperature on chemical equilibrium is given by the
A. Vant-Hoff equation
B. Le-Chatelier’s principle
C. Arhenius equation
D. None of these
✅ The correct answer is option A.
4159. In an adiabatic process, the
A. Heat transfer is zero
B. Temperature change is zero
C. Work done is a path function
D. Enthalpy remains constant
✅ The correct answer is option A.
4160. The theoretical minimum work required to separate one mole of a liquid mixture at 1 atm, containing 50 mole % each of n- heptane and n- octane into pure compounds each at 1 atm is
A. -2 RT ln 0.5
B. -RT ln 0.5
C. 0.5 RT
D. 2 RT
✅ The correct answer is option B.