With increase in the carbon percentage in the steel, its__________________?
Correct answer: B. All A., B. and C.
- A. Hardness increases
- B. All A., B. and C.
- C. Tensile strength increases
- D. Ductility reduces
Explanation
Increasing carbon generally raises steel hardness and tensile strength but reduces ductility. Since all three changes are listed, the combined choice is correct.
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