This set of Manufacturing Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Iron Carbon Phase Diagram-1”.
1. The melting point of iron (in oC) is?
a) 768
b) 1535
c) 1410
d) 910
Answer: b
2. Iron-Carbon phase diagram is a ___________
a) Unary phase diagram
b) Binary phase diagram
c) Tertiary phase diagram
d) Ternary phase diagram
Answer: b
3. The temperature (in oC) of peritectic reaction in iron-carbon phase diagram is?
a) 1539
b) 1493
c) 910
d) 1175
Answer: b
4. The temperature (in oC) of eutectic reaction in iron-carbon phase diagram is?
a) 1539
b) 1493
c) 910
d) 1150
Answer: d
5. The temperature (in oC) of eutectoid reaction in iron-carbon phase diagram is?
a) 1120
b) 725
c) 910
d) 820
Answer: b
6. The percentage of carbon at eutectic point in Fe-C phase diagram is?
a) 2.1
b) 4.3
c) 0.83
d) 0.02
Answer: b
7. The percentage of carbon at eutectoid point in Fe-C phase diagram is?
a) 2.1
b) 4.3
c) 0.83
d) 0.02
Answer: c
8. The percentage of carbon at peritectic point in Fe-C phase diagram is?
a) 2.1
b) 4.3
c) 0.83
d) 0.18
Answer: d
9. Which of the following reaction does not exhibit mushy zone in Fe-C phase diagram?
a) Eutectic reaction
b) Peritectic reaction
c) Eutectoid reaction
d) Peritectoid reaction
Answer: a
10. γ form of iron is?
a) Magnetic
b) Non magnetic
c) Occurs below 768oC
d) Occurs above 1410oC
Answer: a