Explore topic-wise MCQs in Chemical Engineering.

This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Chemical Engineering knowledge and support exam preparation. Choose a topic below to get started.

1.

A stone has initial potential, kinetic and internal energy 7 J, 10 J and 2x J respectively, if the final kinetic energy, potential energy and internal energy are 5 J, 21 J and x respectively, what is the final internal energy?

A. 2 J
B. 4 J
C. 5 J
D. 9 JView answer
Answer» E.
Discussion
2.

Ratio of change in internal energy of a substance from 15oC to T and from T to 10oC is – 2, what is T?

A. 5oC
B. 15oC
C. 20oC
D. 30oCView answer
Answer» B. 15oC
Discussion
3.

Ratio of change in internal energy of a substance from 4oC to T and from T to 10oC is 2, what is T?

A. 5oC
B. 6oC
C. 7oC
D. 8oCView answer
Answer» E.
Discussion
4.

What is the change in internal energy of 1 mole of air ((Cv = 2.1 X 104 J/moleoC), if its temperature changes from 10oC to 5oC?

A. 84 kJ
B. 105 kJ
C. – 84 kJ
D. – 105 kJView answer
Answer» E.
Discussion
5.

What is the change in internal energy of 2 mole of air (Cv = 2.1 X 104 J/moleoC), if its temperature changes from 10oC to 20oC?

A. 420 kJ
B. 540 kJ
C. 840 kJ
D. 1050 kJView answer
Answer» B. 540 kJ
Discussion
6.

A_STONE_HAS_INITIAL_POTENTIAL,_KINETIC_AND_INTERNAL_ENERGY_7_J,_10_J_AND_2X_J_RESPECTIVELY,_IF_THE_FINAL_KINETIC_ENERGY,_POTENTIAL_ENERGY_AND_INTERNAL_ENERGY_ARE_5_J,_21_J_AND_X_RESPECTIVELY,_WHAT_IS_THE_FINAL_INTERNAL_ENERGY??$
A. 2 J
B. 4 J
C. 5 J
D. 9 J
Answer» E.
Discussion
7.

A stone has initial potential, kinetic and internal energy 4 J, 15 J and 20 J respectively, if the final kinetic energy and potential energy of the stone is 5 J and 10 J respectively, what is the final internal energy?

A. 15 J
B. 20 J
C. 24 J
D. 32 J
Answer» D. 32 J
Discussion
8.

A stone has initial potential and kinetic energy as 5 J and 20 J respectively if the final kinetic energy of the stone is 15 J what is its final potential energy?

A. 0
B. 10 J
C. 15 J
D. 25 J
Answer» C. 15 J
Discussion
9.

A stone has initial potential and kinetic energy as 10 J and 5 J respectively if the final potential energy of the stone is 15 J what is its final kinetic energy?

A. 0
B. 5 J
C. 10 J
D. 15 J
Answer» B. 5 J
Discussion
10.

Total energy of the universe is always ______

A. Increasing
B. Decreasing
C. Constant
D. Cannot say
Answer» D. Cannot say
Discussion
11.

Ratio of change in internal energy of a substance from 15oC to T and from T to 10oC is – 2, what is T?$

A. 5<sup>o</sup>C
B. 15<sup>o</sup>C
C. 20<sup>o</sup>C
D. 30<sup>o</sup>C
Answer» B. 15<sup>o</sup>C
Discussion
12.

Ratio of change in internal energy of a substance from 4oC to T and from T to 10oC is 2, what is T?

A. 5<sup>o</sup>C
B. 6<sup>o</sup>C
C. 7<sup>o</sup>C
D. 8<sup>o</sup>C
Answer» E.
Discussion
13.

What is the change in internal energy of 1 mole of air ((Cv = 2.1 X 104 J/moleoC), if its temperature changes from 10oC to 5oC?

A. 84 kJ
B. 105 kJ
C. – 84 kJ
D. – 105 kJ
Answer» E.
Discussion
14.

What is the change in internal energy of 2 mole of air (Cv = 2.1 X 104 J/moleoC), if its temperature changes from 10oC to 20oC?

A. 420 kJ
B. 540 kJ
C. 840 kJ
D. 1050 kJ
Answer» B. 540 kJ
Discussion
15.

What is the change in internal energy for a process which has final and initial states are exactly similar?

A. Positive
B. Negative
C. Zero
D. Cannot say
Answer» D. Cannot say
Discussion