Multiple choice

Percentage of carbon in steel ranges from

  1. 0·1 to 1·5

  2. 1·5 to 3·0

  3. 3·0 to 4·0

  4. 4·0 to 6·0
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A Correct answer
Explanation

Steel is an alloy primarily composed of iron and carbon. The carbon content typically ranges from 0.1% to 1.5% for most common steels - mild steel has 0.05-0.25%, medium carbon steel 0.25-0.60%, and high carbon steel 0.60-1.0%. This range covers the vast majority of commercial steel applications. Options B, C, and D represent carbon levels that would approach cast iron or exceed typical steel compositions.

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