FE CHEMICAL ENGINEERING EXAM QUESTIONS
AND CORRECT ANSWERS (VERIFIED ANSWERS)
PLUS RATIONALES 2026 Q&A | INSTANT
DOWNLOAD PDF
1. Which of the following quantities is an intensive property?
A. Mass
B. Volume
C. Internal energy
D. Temperature
Answer: D
Intensive properties do not depend on the amount of matter
present.
2. A system that can exchange energy but not mass with its
surroundings is best described as:
A. Open system
B. Closed system
C. Isolated system
D. Adiabatic system
Answer: B
A closed system allows energy transfer but not mass transfer.
3. Which law of thermodynamics states that energy cannot be
created or destroyed?
A. Zeroth law
B. First law
C. Second law
D. Third law
, Answer: B
The first law expresses conservation of energy.
4. The SI unit of pressure is:
A. Bar
B. Atmosphere
C. Pascal
D. Torr
Answer: C
Pressure in SI units is measured in pascals (N/m²).
5. Which of the following is NOT a state function?
A. Enthalpy
B. Entropy
C. Work
D. Internal energy
Answer: C
Work depends on the path taken, not just the state.
6. For an ideal gas, which equation applies?
A. PV = nRT
B. PV = RT
C. P = ρRT
D. PV = mRT
Answer: A
The ideal gas law relates pressure, volume, moles, and
temperature.
7. A process that occurs at constant pressure is called:
A. Isochoric
B. Isothermal
C. Isobaric
D. Adiabatic
, Answer: C
Isobaric processes maintain constant pressure.
8. Which unit is commonly used for viscosity in the SI system?
A. Poise
B. Pascal·second
C. Stokes
D. Centipoise
Answer: B
Dynamic viscosity in SI units is Pa·s.
9. Reynolds number is used to determine:
A. Heat transfer rate
B. Mass transfer coefficient
C. Flow regime
D. Reaction rate
Answer: C
Reynolds number distinguishes laminar from turbulent flow.
10. Laminar flow in a circular pipe generally occurs when
Reynolds number is less than:
A. 400
B. 1000
C. 2100
D. 4000
Answer: C
Flow is typically laminar below Re ≈ 2100.
11. Which of the following best describes entropy?
A. Energy content
B. Disorder of a system
C. Heat capacity
D. Work potential
AND CORRECT ANSWERS (VERIFIED ANSWERS)
PLUS RATIONALES 2026 Q&A | INSTANT
DOWNLOAD PDF
1. Which of the following quantities is an intensive property?
A. Mass
B. Volume
C. Internal energy
D. Temperature
Answer: D
Intensive properties do not depend on the amount of matter
present.
2. A system that can exchange energy but not mass with its
surroundings is best described as:
A. Open system
B. Closed system
C. Isolated system
D. Adiabatic system
Answer: B
A closed system allows energy transfer but not mass transfer.
3. Which law of thermodynamics states that energy cannot be
created or destroyed?
A. Zeroth law
B. First law
C. Second law
D. Third law
, Answer: B
The first law expresses conservation of energy.
4. The SI unit of pressure is:
A. Bar
B. Atmosphere
C. Pascal
D. Torr
Answer: C
Pressure in SI units is measured in pascals (N/m²).
5. Which of the following is NOT a state function?
A. Enthalpy
B. Entropy
C. Work
D. Internal energy
Answer: C
Work depends on the path taken, not just the state.
6. For an ideal gas, which equation applies?
A. PV = nRT
B. PV = RT
C. P = ρRT
D. PV = mRT
Answer: A
The ideal gas law relates pressure, volume, moles, and
temperature.
7. A process that occurs at constant pressure is called:
A. Isochoric
B. Isothermal
C. Isobaric
D. Adiabatic
, Answer: C
Isobaric processes maintain constant pressure.
8. Which unit is commonly used for viscosity in the SI system?
A. Poise
B. Pascal·second
C. Stokes
D. Centipoise
Answer: B
Dynamic viscosity in SI units is Pa·s.
9. Reynolds number is used to determine:
A. Heat transfer rate
B. Mass transfer coefficient
C. Flow regime
D. Reaction rate
Answer: C
Reynolds number distinguishes laminar from turbulent flow.
10. Laminar flow in a circular pipe generally occurs when
Reynolds number is less than:
A. 400
B. 1000
C. 2100
D. 4000
Answer: C
Flow is typically laminar below Re ≈ 2100.
11. Which of the following best describes entropy?
A. Energy content
B. Disorder of a system
C. Heat capacity
D. Work potential
