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Question

Which of the following defects decrease the density?

A
Interstitial defect
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B
Vacancy defect
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C
Frenkel defect
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D
Schottky defect
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Solution

The correct options are
B Vacancy defect
C Schottky defect
Vacancy and Schottky defect which lead to decrease the density both are the types of a stoichiometric defect. In case of Frenkel defect and interstitial defect, there is no change in density of substance.

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