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.

What is the efficiency of phase rule over Lever rule?

A. 25%
B. 50%
C. 75%
D. 85%
Answer» E.
2.

Calculate the concentration from the given data.T = 20 degreesP = 2 atm

A. 5
B. 2
C. 10
D. 0
Answer» D. 0
3.

In the mixture of liquid and vapor compositions, identify the type of component present in between the two components (at equilibrium point).

A. Regular solution
B. Equilibrium solution
C. Transition solution
D. Steady state solution
Answer» E.
4.

What are the limits of phase rule?

A. Cannot determine the presence of more the one phase in a system
B. Cannot determine solubility
C. Cannot determine composition
D. Can determine temperature
Answer» B. Cannot determine solubility
5.

In the mixture of propanol and iso propanol, identify the component at the meeting point of these two components.

A. Propanol
B. Propane
C. Propane-2-ol
D. Water
Answer» D. Water
6.

The driving force of the diffusion process in phase diagram is __________________

A. The slope in Gibbs free energy
B. The slope in solubility
C. The slope in temperature
D. The slope in pressure
Answer» B. The slope in solubility
7.

What happens during a non-steady state diffusion?

A. The composition behavior does not change with time
B. The composition behavior changes with time
C. The diffusion can be described by Mond’s Second Law
D. Zero composition
Answer» E.
8.

The mechanism of diffusion of small atomic radius compared to the parent material would be described by __________________

A. Substitutional diffusion
B. Interstitial diffusion
C. Vacancy diffusion
D. Drift
Answer» C. Vacancy diffusion
9.

In the general phase diagram of Ferric chloride – water system, what causes reduction in water content in ferric chloride at each step?

A. Reduction in moisture content
B. Reduction in concentration
C. Reduction in equilibrium shift
D. Increase in temperature
Answer» B. Reduction in concentration
10.

For the T-C relation in phenol, there happens a regular sharpening in concentration of phenol. What will happen if the equilibrium conditions are varied at a particular point?

A. The curve remains unchanged
B. The curve decreases
C. The curve increases
D. The curve inverts
Answer» D. The curve inverts