Explore topic-wise MCQs in Chemical Engineering.

This section includes 46 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.

Under what condition, will we get a stable phase diagram?

A. Solid + Liquid
B. Solid + Vapor
C. Liquid + vapor
D. Liquid + Solid
Answer» B. Solid + Vapor
Discussion
2.

Calculate the eutectic concentration given the following data.Pressure= 1atmTemperature: 1oC

A. 0
B. 2
C. 1
D. 3
Answer» D. 3
Discussion
3.

Which of the following is the formula for condense phase rule?

A. F=C-P+2
B. F=C-P+1
C. F=C+P-2
D. F=C+P-1
Answer» C. F=C+P-2
Discussion
4.

Select the odd statement with respect to a phase reaction.

A. Saturated solution
B. Equilibrium solution
C. Concentric solution
D. Amorphous solution
Answer» B. Equilibrium solution
Discussion
5.

Select a non-homogeneous system from the following.

A. Salt solution
B. Sugar solution
C. Glucose in water
D. Saturated solution of NaCl
Answer» E.
Discussion
6.

Select the wrong statements from the following statements with respect to a phase diagram.

A. Gives information about concentration
B. Gives information about solubility
C. Gives information on melting and boiling points
D. Gives information on relative concentration
Answer» E.
Discussion
7.

Liquid phase exists for all compositions above _________ region.

A. Eutectic region
B. Equilibrium region
C. Isometric region
D. Sublimation region
Answer» D. Sublimation region
Discussion
8.

For water system, the number of phases at the triple point is _____________

A. 0
B. 1
C. 2
D. 3
Answer» E.
Discussion
9.

What is the point at which all the three phases of a system exist?

A. Triple point
B. Sublimation point
C. Vapor point
D. Eutectic point
Answer» B. Sublimation point
Discussion
10.

What does Gibb’s phase rule state?

A. P+F=C-1
B. P+F=C+1
C. P+F=C-2
D. P+F=C+2
Answer» E.
Discussion
11.

What is the degree of freedom of a gaseous mixture composed of CH4, CO2, H2CO3, H2O and H2O2?

A. 1
B. 2
C. 3
D. 4View answer
Answer» E.
Discussion
12.

What is the degree of freedom of a mixture composed of liquid O2, gaseous H2 and ice?

A. 1
B. 2
C. 3
D. 4View answer
Answer» B. 2
Discussion
13.

What is the degree of freedom of a mixture composed Liquid H2O, solid Br2 and gaseous CO2, NO2?

A. 1
B. 2
C. 3
D. 4View answer
Answer» D. 4View answer
Discussion
14.

What is the degree of freedom of a gas mixture composed of O2, H2O and H2O2?

A. 1
B. 2
C. 3
D. 4View answer
Answer» D. 4View answer
Discussion
15.

What is the degree of freedom of a gas mixture composed of CO2, SO2, SO3, CH4, H2CO3?

A. 2
B. 3
C. 5
D. 7View answer
Answer» D. 7View answer
Discussion
16.

What is the degrees of freedom of a system with a mixture of copper pyrites, liquid benzene and helium?

A. 1
B. 2
C. 3
D. 4View answer
Answer» C. 3
Discussion
17.

What is the degrees of freedom of a system with a mixture of ice, water and neon?

A. 1
B. 2
C. 3
D. 4View answer
Answer» D. 4View answer
Discussion
18.

For binary alloy consisting of three phases of non – equilibrium one, What will be the temperature of these phases?

A. Different
B. Constant
C. Same
D. Two of them will be with one temperature
Answer» D. Two of them will be with one temperature
Discussion
19.

When α, L and β phase fields touch the isotherm line what are the respective phase compositions?

A. 8.0 wt%, 71.9 wt%, 91.2 wt% of Ag
B. 8.0 wt%, 91.2 wt%, 71.9 wt% of Ag
C. 71.9 wt%, 91.2 wt%, 8.0 wt% of Ag
D. 91.2 wt%, 8.0 wt%, 71.9 wt% of Ag
Answer» B. 8.0 wt%, 91.2 wt%, 71.9 wt% of Ag
Discussion
20.

For single component system when degree of freedom is 1(one) then number of phases _______

A. 2
B. 3
C. 0
D. 1
E. then number of phases _______a) 2b) 3c) 0d) 1
Answer» E. then number of phases _______a) 2b) 3c) 0d) 1
Discussion
21.

What is degree of freedom when three phases co – exist?

A. 2
B. 3
C. 0
D. 1
Answer» D. 1
Discussion
22.

What is degree of freedom when two phases co – exist?

A. 2
B. 3
C. 0
D. 1
Answer» E.
Discussion
23.

What is degree of freedom for single – phase fields on the phase diagram?

A. 2
B. 3
C. 0
D. 1
Answer» B. 3
Discussion
24.

The degree of freedom at a triple point in the unary diagram for water is ________

A. 2
B. 3
C. 0
D. 1
Answer» D. 1
Discussion
25.

In a single – component condensed system, if degree of freedom is zero, maximum number of phases that can co – exist _________

A. 2
B. 3
C. 0
D. 1
Answer» B. 3
Discussion
26.

What is Gibbs phase rule for general system?

A. P = C – 1 – F
B. P = C + 1 – F
C. P + F = C – 2
D. P + F = C + 2
Answer» E.
Discussion
27.

WHAT_IS_THE_DEGREES_OF_FREEDOM_OF_A_SYSTEM_WITH_A_MIXTURE_OF_COPPER_PYRITES,_LIQUID_BENZENE_AND_HELIUM??$

A. 1
B. 2
C. 3
D. 4
Answer» C. 3
Discussion
28.

What is the degree of freedom of a gas mixture composed of O2, H2O and H2O2?$

A. 1
B. 2
C. 3
D. 4
Answer» D. 4
Discussion
29.

What is the degree of freedom of a gas mixture composed of CO2, SO2, SO3, CH4, H2CO3?$

A. 2
B. 3
C. 5
D. 7
Answer» D. 7
Discussion
30.

When_α,_L_and_β_phase_fields_touch_the_isotherm_line_what_are_the_respective_phase_compositions?$#

A. 8.0 wt%, 71.9 wt%, 91.2 wt% of Ag
B. 8.0 wt%, 91.2 wt%, 71.9 wt% of Ag
C. 71.9 wt%, 91.2 wt%, 8.0 wt% of Ag
D. 91.2 wt%, 8.0 wt%, 71.9 wt% of Ag
Answer» D. 91.2 wt%, 8.0 wt%, 71.9 wt% of Ag
Discussion
31.

What is the degree of freedom of a gaseous mixture composed of CH4, CO2, H2CO3, H2O and H2O2?

A. 1
B. 2
C. 3
D. 4
Answer» E.
Discussion
32.

What is the degree of freedom of a mixture composed of liquid O2, gaseous H2 and ice?

A. 1
B. 2
C. 3
D. 4
Answer» B. 2
Discussion
33.

What is the degree of freedom of a mixture composed Liquid H2O, solid Br2 and gaseous CO2, NO2?

A. 1
B. 2
C. 3
D. 4
Answer» D. 4
Discussion
34.

For single component system when degree of freedom is 1(one) then number of phases ______?

A. 2
B. 3
C. 0
D. 1
Answer» E.
Discussion
35.

What is degree of freedom when three phases co – exist?#

A. 2
B. 3
C. 0
D. 1
Answer» D. 1
Discussion
36.

What is the degrees of freedom of a system with a mixture of water, liquid benzene and oxygen?

A. 1
B. 2
C. 3
D. 4
Answer» D. 4
Discussion
37.

What is the degrees of freedom of a system with a mixture of water and ice?

A. 1
B. 2
C. 3
D. 4
Answer» B. 2
Discussion
38.

What is degree of freedom when two phases co – exist?$

A. 2
B. 3
C. 0
D. 1
Answer» E.
Discussion
39.

What is the degrees of freedom of a system with pure water?

A. 2
B. 4
C. 5
D. 7
Answer» B. 4
Discussion
40.

What is the degrees of freedom of a system with 5 phases and 5 components?

A. 1
B. 2
C. 3
D. 4
Answer» C. 3
Discussion
41.

What is the degree of freedom of a system with 3 phases and 5 components?

A. 1
B. 2
C. 3
D. 4
Answer» E.
Discussion
42.

In a single – component condensed system, if degree of freedom is zero, maximum number of phases that can co – exist _________$

A. 2
B. 3
C. 0
D. 1
Answer» B. 3
Discussion
43.

What is the number of components in a system with 3 degrees of freedom and 2 phases?

A. 1
B. 2
C. 3
D. 4
Answer» D. 4
Discussion
44.

What is Gibbs phase rule for metallurgical system?

A. F = C – 1 – P
B. F = C + 1 – P
C. P + F = C – 2
D. P + F = C + 2
Answer» C. P + F = C ‚Äö√Ñ√∂‚àö√ë‚àö¬® 2
Discussion
45.

What is the number of phases in a system with 2 degrees of freedom and 2 components?

A. 1
B. 2
C. 3
D. 4
Answer» C. 3
Discussion
46.

What is the degree of freedom of a system with 2 phases and 1 component?

A. 1
B. 2
C. 3
D. 4
Answer» B. 2
Discussion