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प्रश्न
Which of the following defects is also known as dislocation defect?
पर्याय
Frenkel defect
Schottky defect
Non-stoichiometric defect
Simple interstitial defect
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उत्तर
Frenkel defect
Explanation:
In Frenkel defect, some cations occupy interstitial site and hence it is also called dislocation defect.
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संबंधित प्रश्न
Explain the following term with a suitable example:
Interstitials
Give reasons : In stoichiometric defects, NaCl exhibits Schottky defect and not Frenkel defect.
Examine the given defective crystal:
Answer the following questions :
(i) What type of stoichiometric defect is shown by the crystal?
(ii) How is the density of the crystal affected by this defect?
(iii) What type of ionic substances show such defect?
non-stoichiometric defects?
Answer the following question.
What type of stoichiometric defect is shown by ZnS and why?
Ionic solids containing large differences in sizes of ions show ____________.
The radius of Cs+ is 169 pm and Cl− is 181 pm. The radius ratio is ____________.
Type of stoichiometric defect shown by ZnS is ____________.
Type of stoichiometric defect shown by AgBr is ____________.
The following diagram shows:
Which is not correct about the Schottky defects?
Assertion: Due to Frenkel defect, there is no effect on the density of the crystalline solid.
Reason: In Frenkel defect, no cation or anion leaves the crystal.
Cations are present in the interstitial sites in ______.
Which of the following point defects are shown by AgBr(s) crystals?
- Schottky defect
- Frenkel defect
- Metal excess defect
- Metal deficiency defect
Which of the following statements are not true?
(i) Vacancy defect results in a decrease in the density of the substance.
(ii) Interstitial defects results in an increase in the density of the substance.
(iii) Impurity defect has no effect on the density of the substance.
(iv) Frankel defect results in an increase in the density of the substance.
Which of the following defects decrease the density?
(i) Interstitial defect
(ii) Vacancy defect
(iii) Frankel defect
(iv) Schottky defect
Why is FeO (s) not formed in stoichiometric composition?
Schottky defect is noticed in ______
Which type of ‘defect’ has the presence of cations in the interstitial sites?
