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Questions  

Which of the following statements are not true?

a
Vacancy defect results in a decrease in the density of the substance
b
Interstitial defects result in an increase in the density of the substance
c
Impurity defect has no effect on the density of the substance
d
Frenkel defect results in an increase in the density of the substance

detailed solution

Correct option is C

Impurity defect changes the density of substance as impurity has different density than the ion present in perfect crystal. Frenkel defect has no effect on density of the substance.

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Similar Questions

Match the defects given in Column I with the statements given in Column II.
 

 Column I Column II
A.Simple vacancy defect1.Shown by non-ionic solids and increases density of the solid.
B.Simple interstitial defect2.Shown by ionic solids and decreases density of the solid.
C.Frenkel defect3.Shown by non-ionic solids and density of the solid decreases.
D.Schottky defect4.Shown by ionic solids and density of the solid remains the same.


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