33. Schottky defect in a crystal arises due to
a. Creation of equal number of cation and anion vacancies
b. Creation of unequal number of cation and anion vacancies
c. Migration of cations to interstitial voids
d. Migration of anions to interstitial voids
Ans. a
Explanation : In schottky defect equal number of cations and anions leave the crystal lattice to form equal number of cationic and anionic vacancies
(11)
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