Which one of the following is brittle?
Correct answer: A. Glass
- A. Glass
- B. Cu (Copper)
- C. Al (Aluminum)
- D. All of these
Explanation
The correct answer is Glass. Glass is brittle because it tends to break or shatter easily under stress without significant deformation. This is due to its atomic structure, which does not allow for dislocation movement, unlike metals. Copper and aluminium are metals known for their ductility. They can undergo significant plastic deformation before breaking, which is a characteristic of ductile materials.
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About Physics of Solids
Solids are compared through crystal structure, amorphous arrangement, elasticity, plastic deformation, stress, strain and Young’s modulus. Electrical behavior depends on available charge carriers and band structure, so conductors, insulators and semiconductors must be distinguished from mechanical properties such as strength, stiffness and brittleness.
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