1. Promotes graphite module formation. |
2. Promotes graphite flake formation. |
3. Increases the fluidity of the molten metal. |
4. Improves the ductility of cast iron. |
A) 1 and 4 are correct
B) 2 and 3 are correct
C) 1 and 3 are correct
D) 3 and 4 are correct.
Correct Answer: B
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