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White cast iron has
Answer & Solution
Correct Answer:
Option
D
The correct answer is D: All of these
Let's break down why:
Option A: Carbon in the form of carbide - This is true. White cast iron gets its hardness and brittleness because the carbon is chemically bonded with iron to form iron carbide (Fe3C), also known as cementite.
Option B: Low tensile strength - This is also true. Tensile strength refers to how well a material resists being pulled apart. Because of the hard, brittle iron carbide structure, white cast iron is very poor at resisting tensile forces; it breaks easily when pulled or stretched.
Option C: High compressive strength - This is also true. Compressive strength refers to how well a material resists being crushed. The hard carbide structure in white cast iron *does* make it quite good at resisting compressive forces.
Since all three options (A, B, and C) are correct statements about white cast iron, the best answer is D: All of these.
Let's break down why:
Option A: Carbon in the form of carbide - This is true. White cast iron gets its hardness and brittleness because the carbon is chemically bonded with iron to form iron carbide (Fe3C), also known as cementite.
Option B: Low tensile strength - This is also true. Tensile strength refers to how well a material resists being pulled apart. Because of the hard, brittle iron carbide structure, white cast iron is very poor at resisting tensile forces; it breaks easily when pulled or stretched.
Option C: High compressive strength - This is also true. Compressive strength refers to how well a material resists being crushed. The hard carbide structure in white cast iron *does* make it quite good at resisting compressive forces.
Since all three options (A, B, and C) are correct statements about white cast iron, the best answer is D: All of these.
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LoginRight answer is A
C. Low compressive strength
Then answer would be option D.
But here in your question options are given wrong.
Because white cast iron has high tensile strength and low compressive strength.
As phosphorus aids fusibility and fluidity in cast iron.