Question

33. Which is the incorrect statement?
(1) FeO₀.₉₈ has non stoichiometric metal deficiencydefect
(2) Density decreases in case of crystals withSchottky's defect
(3) NaCl(s) is insulator, silicon is semiconductor,silver is conductor, quartz is piezo electriccrystal
(4) Frenkel defect is favoured in those ioniccompounds in which sizes of cation and anionsare almost equal

Answer 1

Answer:

options c is right answer of this question