Which of the following is anisotropic?
Correct answer: B. Quartz
- A. Hydrogen
- B. Quartz
- C. Water
- D. Rubber
Explanation
Quartz is an example of an anisotropic material. Its crystal structure leads to different physical properties depending on the direction or axis along which the measurements are taken. Properties like refractive index, thermal expansion, and elasticity vary with direction within quartz crystals due to their non-uniform atomic arrangement. Therefore, option b is correct.
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About Crystalline Solids
Crystalline solids contain particles arranged in a regular repeating lattice described by a unit cell. Their study includes coordination number, packing efficiency, density, anisotropy, cleavage, polymorphism and common crystal systems, along with ionic, molecular, covalent network and metallic crystals. Crystalline order differs from the random arrangement of amorphous solids.
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