This set of Engineering Materials Science "Multiple Choice Questions & Answers" are based on "PHASE DIAGRAM"
PHASE DIAGRAM
Multiple Choice Questions (MCQ)
Hello reader, here you can find some MCQ with answers. But before reading this I will suggest you take a practice test on these questions given below. so you can understand your strength on this topic.
Click here to go Practice Test section on this topic namely Phase Diagram.
But if you want to read this topic first and then practice it then read it carefully. The Multiple Choice Questions (MCQ) based on the Phase Diagram are given below:
PART - I
1) The maximum number of the co-existing phase in a C-component system is
Correct Answer is "A"
F = 0 for co-existing case, so from Gibbs phase rule, 0 = C – P + 2 or P = C + 2.
2) The phase boundary between solid and solid solution regions is called
Correct Answer is "C"
The phase boundary between solid and solid solution regions is called Solvus.
3) If one solid phase splits into two solid phases on heating, the reaction is
Correct Answer is "D"
In Peritectoid reaction one solid phase splits into two solid phases on heating.
4) Above which of the following line, liquid phase exists for all compositions in a phase diagram?
Correct Answer is "C"
Above the Liquidus line, the liquid phase exists for all compositions in a phase diagram.
5) The boundary line between (liquid) and (liquid+solid) regions is called
Correct Answer is "A"
The boundary line between (liquid) and (liquid+solid) regions is called Liquidus.
6) An invariant reaction that produces a solid upon cooling two liquids is known as
Correct Answer is "D"
The syntectic reaction produces a solid upon cooling two liquids.
7) A specific body of material or a series of alloys with the same compositions is/are known as
Correct Answer is "A"
A specific body of material or a series of alloys with the same compositions is/are known as System.
8) The point at which solid, liquid, and vapor phase of water co-exist is known as
Correct Answer is "C"
The point at which the solid, liquid, and vapor phase of water co-exist is known as the Triple point.
9) Triple point of pure water is at
Correct Answer is "B"
The triple point of pure water is at 0.006 atm.
10) Horizontal arrest in a cooling curve represents:
Correct Answer is "A"
Horizontal arrest in a cooling curve represents an Invariant reaction.
Do you read all the questions and answers given above carefully? let's make a practice on all the questions given above.
Go to: Practice Test on Phase Diagram (MCQ) PART - I
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