Introduction to Energy Balances MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Introduction to Energy Balances, a fundamental topic in the field of Basic Chemical Engineering. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Introduction to Energy Balances MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Introduction to Energy Balances mcq questions that explore various aspects of Introduction to Energy Balances problems. Each MCQ is crafted to challenge your understanding of Introduction to Energy Balances principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Basic Chemical Engineering tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Introduction to Energy Balances MCQs are your pathway to success in mastering this essential Basic Chemical Engineering topic.

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Introduction to Energy Balances MCQs | Page 13 of 37

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Q121.
What is the energy balance to open system?

a.

Energy in the system is constant

b.

Matter in the system is constant

c.

Matter is constant energy is variable

d.

Both matter and energy are variable

Discuss
Answer: (d).Both matter and energy are variable
Q122.
5 Kg of water is pumped to a height of 5 m, the enthalpy is changed by 10 J/Kg, and work done by the motor is 100 J/Kg, assuming system is insulated what is the change in internal energy of water?

a.

50 J

b.

100 J

c.

150 J

d.

200 J

Discuss
Answer: (d).200 J
Q123.
10 Kg of water is pumped to a height of 2 m, the enthalpy is changed by 15 J/Kg, and work done by the motor is 50 J/Kg, assuming system is insulated what is the change in internal energy of water?

a.

50 J

b.

100 J

c.

150 J

d.

200 J

Discuss
Answer: (c).150 J
Q124.
1 Kg of water is pumped to a height of 1 m, the enthalpy is changed by 5 J/Kg, and work done by the motor is 25 J/Kg, assuming system is insulated what is the change in internal energy of water?

a.

10 J

b.

25 J

c.

35 J

d.

50 J

Discuss
Answer: (a).10 J
Q125.
1 Kg of water is pumped to a height of 10 m, the enthalpy is changed by 50 J/Kg, and work done by the motor is 300 J/Kg, assuming system is insulated what is the change in internal energy of water?

a.

100 J

b.

150 J

c.

200 J

d.

300 J

Discuss
Answer: (b).150 J
Q126.
2 Kg of water (CP = 0.15 J/Kg°C) is pumped to a height of 0.1 m, work done by the motor is 10 J/Kg, and heat liberated by it is 5 J/Kg, what is the final temperature of water if the initial temperature was 27°C?

a.

10°C

b.

19°C

c.

27°C

d.

37°C

Discuss
Answer: (d).37°C
Q127.
1 Kg of water (CP = 0.5 J/Kg°C) is pumped to a height of 0.5 m, work done by the motor is 40 J/Kg, and heat liberated by it is 10 J/Kg, what is the final temperature of water if the initial temperature was 10°C?

a.

10°C

b.

30°C

c.

40°C

d.

60°C

Discuss
Answer: (d).60°C
Q128.
1 Kg of water (CP = 0.5 J/Kg°C) is pumped to a height of 1 m, work done by the motor is 20 J/Kg, and heat liberated by it is 5 J/Kg, what is the final temperature of water if the initial temperature was 20°C?

a.

20°C

b.

30°C

c.

40°C

d.

50°C

Discuss
Answer: (b).30°C
Q129.
1 Kg of water (CP = 0.4 J/Kg°C) is pumped to a height of 2 m, work done by the motor is 50 J/Kg, and heat liberated by it is 10 J/Kg, what is the final temperature of water if the initial temperature was 25°C?

a.

25°C

b.

45°C

c.

60°C

d.

75°C

Discuss
Answer: (d).75°C
Q130.
5 Kg of water (CP = 1 J/Kg°C) is pumped to a height of 0.5 m, work done by the motor is 50 J/Kg, and heat liberated by it is 5 J/Kg, what is the final temperature of water if the initial temperature was 0°C?

a.

2°C

b.

4°C

c.

6°C

d.

8°C

Discuss
Answer: (c).6°C
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