Free Crystalline and Amorphous Solids MCQs with Answers

12 Crystalline and Amorphous Solids MCQs from Physics, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.

Crystalline solids have a regular, repeating lattice and a sharp melting point, while amorphous solids lack long-range order and soften over a temperature range. The topic covers unit cells, anisotropy, cleavage, symmetry and examples such as salts, metals, glass and plastics. Crystalline order must not be confused with mere hardness.

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12 questions · page 2 of 2

11. Choose the anisotropic behavior

Moderate
  • A. Coefficient of thermal expansion
  • B. Lattice energy
  • C. Viscosity
  • D. Infrared spectroscopy

Explanation: Anisotropy is the property of a material which allows it to change or assume different properties in different directions so the correct option is A i.e coefficient of thermal expansion as there are 3 coefficients i.e for volume, area and linear expansion

Correct answer: Coefficient of thermal expansion

12. Which of the following does not show anisotropy?

Moderate
  • A. Diamond
  • B. Graphite
  • C. Glass
  • D. Rock salt

Explanation: Glass is an isotropic material, meaning its properties are the same in all directions. It lacks the ordered crystalline structure that leads to anisotropy in materials like diamond and graphite.Anisotropy refers to the property of a material exhibiting different physical properties along different axes.

Correct answer: Glass