318820
The correct statement regarding defects in solids is
1 Frenkel defect is favoured by a very small difference in the size of cation and anion.
2 Frenkel defect is not a dislocation defect.
3 Trapping of \(e^{-}\)in lattice leads to the formation of F-centre.
4 Schottky defects have no effect on the physical properties of solid.
Explanation:
Trapping of \(e^{-}\)in lattice leads to the formation of F-centre.
CHXII01:THE SOLID STATE
318821
What type of non-stoichiometric defect is present in \(\mathrm{Fe}_{0.93} \mathrm{O}_{1.00}\) ?
1 Metal excess defect
2 Metal deficiency defect
3 Impurity defect
4 Schottky defect
Explanation:
Metal deficiency defect is present in the sample because iron is less in amount than that is required for stoichiometric composition.
CHXII01:THE SOLID STATE
318822
The appearance of colour in solid alkali metal halides is generally due to :
1 Schottky defect
2 F - centre
3 Interstitial position
4 Frenkel defect
Explanation:
Conceptual Questions
JEE - 2014
CHXII01:THE SOLID STATE
318823
Statement A : On heating \(\mathrm{NaCl}\) and \(\mathrm{ZnO}\) turn yellow. Statement B : Colour of crystals due to metal excess defect due to anionic vacancies.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
On heating both \(\mathrm{NaCl}\) and \(\mathrm{ZnO}\) turn yellow. It happens due to metal excess defect due to anionic vacancies in case of \(\mathrm{NaCl}\) and due to the presence of extra cations at interstitial sites in case of \(\mathrm{ZnO}\).
318820
The correct statement regarding defects in solids is
1 Frenkel defect is favoured by a very small difference in the size of cation and anion.
2 Frenkel defect is not a dislocation defect.
3 Trapping of \(e^{-}\)in lattice leads to the formation of F-centre.
4 Schottky defects have no effect on the physical properties of solid.
Explanation:
Trapping of \(e^{-}\)in lattice leads to the formation of F-centre.
CHXII01:THE SOLID STATE
318821
What type of non-stoichiometric defect is present in \(\mathrm{Fe}_{0.93} \mathrm{O}_{1.00}\) ?
1 Metal excess defect
2 Metal deficiency defect
3 Impurity defect
4 Schottky defect
Explanation:
Metal deficiency defect is present in the sample because iron is less in amount than that is required for stoichiometric composition.
CHXII01:THE SOLID STATE
318822
The appearance of colour in solid alkali metal halides is generally due to :
1 Schottky defect
2 F - centre
3 Interstitial position
4 Frenkel defect
Explanation:
Conceptual Questions
JEE - 2014
CHXII01:THE SOLID STATE
318823
Statement A : On heating \(\mathrm{NaCl}\) and \(\mathrm{ZnO}\) turn yellow. Statement B : Colour of crystals due to metal excess defect due to anionic vacancies.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
On heating both \(\mathrm{NaCl}\) and \(\mathrm{ZnO}\) turn yellow. It happens due to metal excess defect due to anionic vacancies in case of \(\mathrm{NaCl}\) and due to the presence of extra cations at interstitial sites in case of \(\mathrm{ZnO}\).
318820
The correct statement regarding defects in solids is
1 Frenkel defect is favoured by a very small difference in the size of cation and anion.
2 Frenkel defect is not a dislocation defect.
3 Trapping of \(e^{-}\)in lattice leads to the formation of F-centre.
4 Schottky defects have no effect on the physical properties of solid.
Explanation:
Trapping of \(e^{-}\)in lattice leads to the formation of F-centre.
CHXII01:THE SOLID STATE
318821
What type of non-stoichiometric defect is present in \(\mathrm{Fe}_{0.93} \mathrm{O}_{1.00}\) ?
1 Metal excess defect
2 Metal deficiency defect
3 Impurity defect
4 Schottky defect
Explanation:
Metal deficiency defect is present in the sample because iron is less in amount than that is required for stoichiometric composition.
CHXII01:THE SOLID STATE
318822
The appearance of colour in solid alkali metal halides is generally due to :
1 Schottky defect
2 F - centre
3 Interstitial position
4 Frenkel defect
Explanation:
Conceptual Questions
JEE - 2014
CHXII01:THE SOLID STATE
318823
Statement A : On heating \(\mathrm{NaCl}\) and \(\mathrm{ZnO}\) turn yellow. Statement B : Colour of crystals due to metal excess defect due to anionic vacancies.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
On heating both \(\mathrm{NaCl}\) and \(\mathrm{ZnO}\) turn yellow. It happens due to metal excess defect due to anionic vacancies in case of \(\mathrm{NaCl}\) and due to the presence of extra cations at interstitial sites in case of \(\mathrm{ZnO}\).
318820
The correct statement regarding defects in solids is
1 Frenkel defect is favoured by a very small difference in the size of cation and anion.
2 Frenkel defect is not a dislocation defect.
3 Trapping of \(e^{-}\)in lattice leads to the formation of F-centre.
4 Schottky defects have no effect on the physical properties of solid.
Explanation:
Trapping of \(e^{-}\)in lattice leads to the formation of F-centre.
CHXII01:THE SOLID STATE
318821
What type of non-stoichiometric defect is present in \(\mathrm{Fe}_{0.93} \mathrm{O}_{1.00}\) ?
1 Metal excess defect
2 Metal deficiency defect
3 Impurity defect
4 Schottky defect
Explanation:
Metal deficiency defect is present in the sample because iron is less in amount than that is required for stoichiometric composition.
CHXII01:THE SOLID STATE
318822
The appearance of colour in solid alkali metal halides is generally due to :
1 Schottky defect
2 F - centre
3 Interstitial position
4 Frenkel defect
Explanation:
Conceptual Questions
JEE - 2014
CHXII01:THE SOLID STATE
318823
Statement A : On heating \(\mathrm{NaCl}\) and \(\mathrm{ZnO}\) turn yellow. Statement B : Colour of crystals due to metal excess defect due to anionic vacancies.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
On heating both \(\mathrm{NaCl}\) and \(\mathrm{ZnO}\) turn yellow. It happens due to metal excess defect due to anionic vacancies in case of \(\mathrm{NaCl}\) and due to the presence of extra cations at interstitial sites in case of \(\mathrm{ZnO}\).
