A pure crystallic substance , on being heated gradually first a hurbit looking liquid and then the furbidly completely disppears .This behaviour is the characteristic of substances forming

Options

A. allotropic crystals
B. liquid crystals
C. isomeric crystals
D. isomorphous crystals

Answer

2

Explanation

Such type of phenomeon is only exhibited by liquids crystals. Liquids -crystal displays (LCD's) are common in calculators and wrist watches . Liquids crystals ,which are the basic of these displays ,generally consists of rod like molecules in a phase that is intermediciate in order between a liquid and a crystallise solid.
several different types of liquids phases exis differening in type of molecular order.For example in Nematic liquids crystal ,the rod like molecules are aligned in the same directions,although the position of the molecules arc random.
Allotropic crystals of allotropes . Isomeric crystals are crystals of isomeric substances and isomorphous crystals arc crystals of isomorphous substances. Isomorphous describes similarly or identify or identity of crystalline form usually indicating similar or analogous chemical compositons. For example the alums are isomorphous.