Q.

The percentage of carbon in cost iron is

A. 0.01 to 0.25
B. 0.5 to 1.5
C. 6 to 3
D. 3 to 5
Answer» D. 3 to 5
Explanation: Cast Iron is a hard, brittle, nonmalleable iron-carbon alloy, cast into shape. It contains 2 to 4.5 percent carbon, 0.5 to 3 percent silicon, and lesser amounts of sulfur, manganese, and phosphorus.
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