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प्रश्न
Which of the following defects is also known as dislocation defect?
विकल्प
Frenkel defect
Schottky defect
Non-stoichiometric defect
Simple interstitial defect
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 terms with suitable examples : 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?
What type of defect is shown by NaCl in
stoichiometric defects, and
Ionic solids containing large differences in sizes of ions show ____________.
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.
Which of the following point defects are shown by AgBr(s) crystals?
- Schottky defect
- Frenkel defect
- Metal excess defect
- Metal deficiency defect
Frenkel defect is also known as:
(i) stoichiometric defect
(ii) dislocation defect
(iii) impurity defect
(iv) non-stoichiometric defect
Why is FeO (s) not formed in stoichiometric composition?
Given below are two statements:
Statements I: Frenkel defects are vacancy as well as interstitial defects.
Statements II: Frenkel defect leads of colour in ionic solids due to the presence of F-centers.
Choose the most appropriate answer for the statements from the options given below:
