The percentage of carbon in cast iron is : A. 0.01 to 0.25 B. 0.5 to 1.5 C. 6 to 8 D. 3 to 5

The correct answer is: B. 0.5 to 1.5

Cast iron is an alloy of iron and carbon that contains between 2.1% and 6.67% carbon. The carbon content of cast iron is higher than that of steel, which is why cast iron is more brittle and less ductile than steel. However, cast iron is also stronger and more resistant to wear and tear than steel.

The percentage of carbon in cast iron is important because it affects the properties of the alloy. The higher the carbon content, the more brittle and less ductile the cast iron will be. The lower the carbon content, the stronger and more ductile the cast iron will be.

Option A is incorrect because the percentage of carbon in cast iron is not typically between 0.01 and 0.25%.

Option C is incorrect because

Option D is incorrect because the percentage of carbon in cast iron is not typically between 3 and 5%.