1.

Which is the incorrect statement?

Answer»

Frenkel defect is favoured in those ionic COMPOUNDS in which sizes of cation and anions are almost equal
`FeO_(0.98)` has none stiochemetric METAL DEFICIENCY defect
Density decrease in case of crystals with Schottky’s defect
`NaCI_(S)` is INSULATOR, silicon is semicondu­ctor, silver is conductor, quartz is piezo electric crystal.

Answer :A


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