Cast Irons MCQ’s

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This set of Materials Science Multiple Choice Questions & Answers (MCQs) focuses on “Cast Irons”.

1. Cast iron tends to be brittle.
a) True
b) False

2. At what temperature does pure iron turn into FCC structure?
a) 800 °C
b) 900 °C
c) 910 °C
d) 810 °C

3. Which of the following can be carbon composition of cast iron?
a) 1%
b) 1.5%
c) 0.5%
d) 2.5%

4. Which of the following alloying element forces the carbon out of the solution?
a) Silicon
b) Sulphur
c) Nickel
d) Titanium

5. Which of the following alloying element refines pearlite structure?
a) Silicon
b) Sulphur
c) Nickel
d) Titanium

6. Due to the presence of which of the following does white cast iron appear white?
a) Pearlite
b) Ledeburite
c) Martensite
d) Cementite

7. Which of the following alloying element increase hardness?
a) Silicon
b) Sulphur
c) Nickel
d) Titanium

8. Which of the following alloying element is added as a degasser?
a) Silicon
b) Sulphur
c) Nickel
d) Titanium

9. In malleable cast iron, the graphite turns into spheroidal particles.
a) True
b) False

10. What is the form graphite structure in ductile cast iron?
a) Spheroidal
b) Nodular
c) Flakes
d) Layers

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