Chemical Engineering Questions and Answers – Unsteady-State Material and Energy Balances

This set of Chemical Engineering Assessment Questions focuses on “Unsteady-State Material and Energy Balances “.

1. What are the solution of appropriate process material and energy balances?
a) Flow sheeting
b) Flow processing
c) Flow Solving
d) None of the mentioned
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2. What is the computer code used in flow sheeting?
a) Process simulator
b) Process settler
c) Process developer
d) All of the mentioned
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3. What is the fundamental of the flow sheeting codes?
a) Calculation of mass balance
b) Calculation of momentum balance
c) Calculation of force balance
d) All of the mentioned
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4. Which of the following is not found in process simulators?
a) Heat exchangers
b) Compressors
c) Splitters
d) None of the mentioned
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5. Which of the following is a feature of process simulator?
a) Equipment sizing functions
b) Import and export data
c) Scheduling of batch operations
d) All of the mentioned
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6. For solving a process simulation which of the following is required?
a) Material balances
b) Equilibrium relations
c) Energy balances
d) All of the mentioned
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7. What does the interconnections between the unit modules represent?
a) Information flow
b) Material flow
c) Energy flow
d) All of the mentioned
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8. The interconnection equations are for which model?
a) Mixing
b) Splitting
c) Process
d) All of the mentioned
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9. The input mass in a process simulator is 10 Kg, what will be the output mass?
a) 0
b) 5 Kg
c) 8 Kg
d) 10 Kg
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10. The input mass in a process simulator is 5 Kg, what will be the output mass?
a) 0
b) 5 Kg
c) 8 Kg
d) 10 Kg
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11. The feed of a process simulator is 10 J, the heat input is 5 J, and the work performed is 3 J, what will be the product enthalpy?
a) 2 J
b) 5 J
c) 8 J
d) 12 J
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12. The feed of a process simulator is 15 J, the heat input is 8 J, and the work performed is 10 J, what will be the product enthalpy?
a) -3 J
b) 13 J
c) 15 J
d) 17 J
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13. The feed of a process simulator is 10 mole with enthalpy 2 J/mole, the heat input is 15 J, and the work performed is 10 J, what will be the product enthalpy if mole of the product are 5?
a) 2 J/mole
b) 3 J/mole
c) 4 J/mole
d) 5 J/mole
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14. The feed of a process simulator is 5 mole with enthalpy 3 J/mole, the heat input is 15 J, and the work performed is 20 J, what will be the product enthalpy if a mole of the product are 2?
a) 1 J/mole
b) 2 J/mole
c) 3 J/mole
d) 5 J/mole
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15. The feed of a process simulator is 2 mole with enthalpy 4 J/mole, the heat input is 6 J, and the work performed is 10 J, what will be the product enthalpy if a mole of the product are 2?
a) 1 J/mole
b) 2 J/mole
c) 3 J/mole
d) 5 J/mole
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