Presence of 0.3 to 0.5% arsenic in copper increases its____________________?
Correct answer: C. Tenacity & hardness
- A. Ductility
- B. Malleability
- C. Tenacity & hardness
- D. Electrical conductivity
Explanation
A small arsenic addition strengthens copper by increasing its hardness and tensile strength, described here as greater tenacity. It does not improve electrical conductivity, which is a key reason high-purity copper is used for conductors.
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