Moderate

Depending upon the nature of the ordering, liquid crystals are divided into types.

Correct answer: C. Three

  • A. More than 1
  • B. Two
  • C. Three
  • D. Four

Explanation

Liquid crystals can be classified into three main categories: thermotropic liquid crystals, lyotropic liquid crystals, and metallotropic liquid crystals. Thus, option C is •Thermotropic liquid crystals (LC) are anisotropic liquids that possess a mesophase (a phase with crystal and liquid properties) within a certain temperature range.•Lyotropic liquid crystals result when fat-loving and water-loving chemical compounds known as amphiphiles dissolve into a solution that behaves both like a liquid and a solid crystal.•The addition of long-chain soap-like molecules leads to a series of new phases that show a variety of liquid crystalline behavior both as a function of the inorganic-organic composition ratio and of temperature. This class of materials has been named metallotropic.

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About Properties of Liquids

Liquid behavior depends on intermolecular forces, which produce surface tension, viscosity, capillary action and a definite volume without a fixed shape. The topic also covers vapor pressure, evaporation, boiling point and the effect of temperature and external pressure, while distinguishing evaporation at the surface from boiling throughout the liquid.

Practise Liquids

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