What happens when the two Gibbs energy curves for the - and -phases have a common tangent and the equilibrium has been established?

Driving force for diffusion decreases

Driving force for diffusion increases

Driving force for diffusion decreases

Driving force for diffusion remains constant

Driving force first decreases then increases

The driving force for the phase transformation increases in proportion to__________

Degree of undercooling below critical temperature

Explore topic-wise MCQs in Phase Transformation.

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

1.	The condition for equilibrium in a heterogeneous system containing two phases can also be expressed using the_____________
A.	Lever s concept
B.	Raoults rule
C.	Henrys rule
D.	Activity concept
Answer» E.

Discussion

2.	What happens when the two Gibbs energy curves for the - and -phases have a common tangent and the equilibrium has been established?
A.	Driving force for diffusion increases
B.	Driving force for diffusion decreases
C.	Driving force for diffusion remains constant
D.	Driving force first decreases then increases
Answer» B. Driving force for diffusion decreases

Discussion

3.	Calculate the number of phases present in a system in equilibrium, if the degree of freedom is 1, the number of components and non-compositional variables are 1 and 2 respectively?
A.	1
B.	3
C.	0
D.	2
Answer» E.

Discussion

4.	In heterogeneous systems containing more than one phase the pure components can, at least theoretically, exist in different crystal structures.
A.	True
B.	False
Answer» B. False

Discussion

5.	Which among the following condition the most stable state of a system should satisfy so that it can be defined as a state in which pure component has unit activity?
A.	Highest free energy
B.	Lowest free energy
C.	Change in Gibbs energy 0
D.	Positive free energy
Answer» C. Change in Gibbs energy 0

Discussion

6.	The first step in drawing the free energy curve of the FCC phase is, to convert the stable BCC arrangement of atoms into ____________
A.	An unstable FCC arrangement
B.	A stable FCC arrangement
C.	A metastable BCC arrangement
D.	An unstable BCC arrangement
Answer» B. A stable FCC arrangement

Discussion

7.	In a general sense it is not possible to obtain any information about kinetics or the morphology of the phase mixture from the phase diagram.
A.	True
B.	False
Answer» B. False

Discussion

8.	The driving force for the phase transformation increases in proportion to__________
A.	Microstructure
B.	Change in composition
C.	Degree of undercooling below critical temperature
D.	Melting point
Answer» D. Melting point

Discussion

9.	Properties of metallic material primarily depends on _____________
A.	Processing
B.	Type of crystal structure
C.	Microstructure
D.	Grain size
Answer» B. Type of crystal structure

Discussion

10.	Which rule gives the relative number of moles of and that must be present, if the overall composition is given as some X? ( , are stable forms of 2 substance)
A.	Richard s Rule
B.	Raoul s Rule
C.	Henry s Rule
D.	Lever rule
Answer» E.

Discussion

Explore topic-wise MCQs in Phase Transformation.

The condition for equilibrium in a heterogeneous system containing two phases can also be expressed using the_____________

What happens when the two Gibbs energy curves for the - and -phases have a common tangent and the equilibrium has been established?

Calculate the number of phases present in a system in equilibrium, if the degree of freedom is 1, the number of components and non-compositional variables are 1 and 2 respectively?

In heterogeneous systems containing more than one phase the pure components can, at least theoretically, exist in different crystal structures.

Which among the following condition the most stable state of a system should satisfy so that it can be defined as a state in which pure component has unit activity?

The first step in drawing the free energy curve of the FCC phase is, to convert the stable BCC arrangement of atoms into ____________

In a general sense it is not possible to obtain any information about kinetics or the morphology of the phase mixture from the phase diagram.

The driving force for the phase transformation increases in proportion to__________

Properties of metallic material primarily depends on _____________

Which rule gives the relative number of moles of and that must be present, if the overall composition is given as some X? ( , are stable forms of 2 substance)