Question

Liquid crystal phase which are more close to the solid than to liquid is:
(A) Nematic.
(B) Smectic.
(C) Lyotropic.
(D) Cholesteric.

Answer 1

Hint: We know that all the given processes are used to separate the mixture of light and heavy particles be it solid-solid, liquid-liquid or solid-liquid. In case of liquids-solid, when the solid settles down at bottom, the liquid portion is poured out or a simple.

Complete answer:
There are 4 types of phases present in Liquid crystal phases. Smectic phase is more close to solid than liquid because of its atomic arrangement. As we know that various processes are used to separate the different compositions and mixture of heavy and light particles which can involve the particles having solid-solid phase, a liquid-liquid phase or a solid-liquid phase. So let us talk about the given processes one by one. The first one is sedimentation.
We are very well aware of the fact that the sedimentation process helps in separation of large solid particles from a mixture of solid and liquid where the mixture or the solution remained undisturbed for a long time. The larger particles would settle down at the bottom and the liquid would rise above it giving a clear appearance. Then we have decantation which basically means removing the liquid obtained after the process of sedimentation or centrifugation leaving behind the solid particles which settled at the bottom.
Therefore, the correct answer is option B, i.e. smectic phase is more close to solid than liquid because of its atomic arrangement.

Note:
Remember that crystallization is the process that involves the organization of atoms and molecules into a fine structure which is called crystal. Crystals are precipitated from liquid form to a solid form where the solid is first heated at a fixed temperature and then filtered and finally cooled down to result in crystals formation.