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9. | What is the effect of hammering on elasticity of materials? | |
A. | Has no effect on elasticity | |
B. | Decreases the elasticity | |
C. | Increases the elasticity | |
D. | Breaks the material | |
Answer: Option C | |
Explanation: | |
While being hammered or rolled, crystals break into smaller units resulting in increase of their elastic properties. |
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