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.
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