question_answer 102)

  Frenkel defect is also known as........... (a) stoichiometric defect               (b) dislocation defect (c) impurity defect                   (d) non-stoichiometric defect

Answer:

                  (a, b) Frenkel defect arises when the smaller ion (usually cation) is dislocated from its original site to interstitial site, this is also known as dislocation defect. Since, stoichiometry of substance persist so, it is categorised as stoichiometric defect.