# Basic Chemical Engineering Mcqs

Q:

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

Answer & Explanation Answer: B) 2 J/mole

Explanation: Energy balance, 2*H = 2*4 + 6 – 10 = 4, => H = 2 J/mole.

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18
Q:

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

Answer & Explanation Answer: D) 5 J/mole

Explanation: Energy balance, 2*H = 5*3 + 15 – 20 = 10, => H = 5 J/mole.

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13
Q:

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

Answer & Explanation Answer: D) 5 J/mole

Explanation: Energy balance, 5*H = 10*2 + 15 – 10 = 25, => H = 5 J/mole.

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16
Q:

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

Answer & Explanation Answer: B) 13 J

Explanation: Energy balance, H = 15 + 8 – 10 = 13 J.

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14
Q:

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

Answer & Explanation Answer: D) 12 J

Explanation: Energy balance, H = 10 + 5 – 3 = 12 J.

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21
Q:

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

Answer & Explanation Answer: B) 5 Kg

Explanation: Mass balance, product mass = feed mass = 5 Kg.

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16
Q:

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

Answer & Explanation Answer: D) 10 Kg

Explanation: Mass balance, product mass = feed mass = 10 Kg.

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13
Q:

The interconnection equations are for which model?

 A) Mixing B) Splitting C) Process D) All of the mentioned

Answer & Explanation Answer: A) Mixing

Explanation: Mixing model is for interconnection equations.

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