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Which of the following statements are not true?

Question:

Which of the following statements are not true?

(i) Vacancy defect results in a decrease in the density of the substance.

(ii) Interstitial defects increase the density of the substance.

(iii) Impurity defect does not affect the density of the substance.

(iv) Frankel defect results in an increase in the density of the substance.

Solution:

Option (iii) Impurity defect does not affect the density of the substance and (iv) Frankel defect results in an increase in the density of the substance are the answers.

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