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A. Copper crystals
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B. NaCl crystals
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C. Graphite
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D. Ice
Explanation
Cleavage is the tendency of a crystal to break along specific planes of weakness.
Copper, being a metal, has a unique atomic structure that doesn't exhibit distinct planes of weakness.
When stressed, it tends to deform rather than cleave, resulting in a jagged fracture.
جب بھی کرسٹل کی ٹھوس چیزیں ٹوٹ جاتی ہیں تو وہ مخصوص طیاروں کے ساتھ ایسا کرتے ہیں جنہیں کیا کہا جاتا ہے؟
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A. Refractory planes
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B. Sagittal planes
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C. Cleavage planes
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D. Coronal planes
Explanation
Whenever crystalline solids are broken, they do so along definite planes known as cleavage planes.
These planes are specific directions in the crystal lattice where the bonds are weaker.
It allowing the crystal to split smoothly.
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