A substance which on cutting will give irregular cleavage is

A solid which has definite heat of fusion is

In solids the constituent particles may be

A single substance that exists in two or more forms is called

Graphite is a

Anisotropy is observed in

The number of crystal systems (or types) is

The number of Bravais lattices are

Face centred cubic crystal is

The number of tetrahedral sites per sphere in ccp structure is,