A pure crystalline substance, on being heated gradually, first forms a turbid looking liquid and then the turbidity completely disappears. This behaviour is the characteristic of substances forming [BHU 2000] (a) Isomeric crystals (b) Liquid crystals (c) Isomorphous crystals (d) Allotropic crystals
Correct option is B) Liquid crystals are matter in a state that has properties between those of conventional liquid and those of solid crystal. For instance, a liquid crystal may flow like a liquid but its molecules may be oriented in a crystal-like way.