Explore topic-wise MCQs in Engineering Chemistry.

This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Chemistry knowledge and support exam preparation. Choose a topic below to get started.

1.

Overall transformation rate changes with temperature as follows under what condition?

A. Decreases
B. Increases then decreases
C. Follows a linear path
D. Increases with temperature
Answer» C. Follows a linear path
Discussion
2.

Where does the particle growth occur?

A. Movement of grains
B. Movement of equilibrium liquid
C. Equilibrium mixture
D. Non equilibrium mixture
Answer» B. Movement of equilibrium liquid
Discussion
3.

Which of the following is not responsible for phase deposition?

A. Container wall
B. Grain size
C. Stacking effect
D. Disjoints
Answer» B. Grain size
Discussion
4.

During metastable state, the size of the particle_________

A. Increases
B. Decreases
C. Won t change
D. Not related
Answer» B. Decreases
Discussion
5.

Which of the following statements are correct about the equilibrium point on a two component system?

A. All the compounds are liquid
B. The boiling point of the mixture is less than the boiling points of the individual compounds
C. The degree of freedom is 0
D. Invariant reaction takes place
Answer» C. The degree of freedom is 0
Discussion
6.

What does the term metastable indicate?

A. A place where the composition of the system remains constant
B. A place where the pressure remains constant with low value
C. An area below which a vapor- liquid mixture is obtained
D. A region where the temperature remains constant
Answer» E.
Discussion
7.

Which of the following statements is not true for a system that has reached the eutectic temperature?

A. The system is a open system
B. The system is a miscible fluid
C. Components lie in liquid state
D. A region between sublimation and eutectic curve lies stable
Answer» B. The system is a miscible fluid
Discussion
8.

With reference to a two component system, an isobar indicates _______

A. A region where the temperature remains constant
B. An area below phase end products remains
C. An area above which only the liquid vapors remains
D. A region where the composition lies in equilibrium
Answer» E.
Discussion
9.

With reference to a two component system, a vapor line indicates ________

A. A region where the temperature and pressure remains stable
B. A region where the solubility remains constant
C. An area below which components do not mingle
D. An area above which both the components mingle to form a single mixture
Answer» B. A region where the solubility remains constant
Discussion
10.

What is the definition of a lower critical temperature?

A. The minimum temperature at which equilibrium is achieved
B. The lowest temperature at which two components will attain vapor state
C. The lowest temperature at which two components sublimates
D. The lowest temperature at which two components form a mixture
Answer» B. The lowest temperature at which two components will attain vapor state
Discussion