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Statement -1 The energy needed to from a...

Statement -1 The energy needed to from a Schottly defect is usually less then to from a Frenkel defect
Statement -2 Frenkel defect in a compounds leads to a high dielectric constant

A

Statement -1 is True, Statement -2 is true : Statement -2 is a correct explanation for Statement -12

B

Statement -1 is True, Statement -2 is True , Statement -2 is NOT a correct explanation for Statement -12

C

Trapped eletrons

D

Statement -1 and Statement -2 both are False

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Explain Frenkel defect in ionic crystals. What type of compounds exhibit this defect ?

Statement 1: Frenkel defect showa interstitial as well as vacancy effect Statement 2: In Frenkel defect, solids show color because of F-centre.

Statement -1 Crystal defect are saomtimes called thermodnamic defect Statement -2 The number of defect genreally depends on the temperature

Defects are basically irregularities in the arrangement of constituent particles. Broadly speaking the defects are of two types. Namely point defects and line defects. Point defects: The irregularities or deviations from ideal arrangement around a point or an atom in the crystalline substance. Line defects : The irregularities or deviations from ideal arrangement in enitre row of lattice points. Answer the following questions. Select the correct statements : (i) Frenkel defect create a vacancy defect at its original site and an interstitial defect at its new position. (ii) Frenkel defect is stoichiometric point defect. (iii) Frenkel defect is alos called dislocation defect. (iv) Silver halide shows Frenkel defect.

Defects are basically irregularities in the arrangement of constituent particles. Broadly speaking the defects are of two types. Namely point defects and line defects. Point defects: The irregularities or deviations from ideal arrangement around a point or an atom in the crystalline substance. Line defects: The irregularities or deviations from ideal arrangement in entire row of lattice points. Answer the following question. Select the correct statements : Frenkel defect create a vacancy defect at its original site and an interstitial defect at its new position. Frenkel defect is also called dislocation defect Silver halide shows Frenkel defect

Statement - I. Due to Frenkel defect the density of solid decrease. Statement - II. In frenkel defect cation or anion is present at interstitial site leaving lattice sites vacant.

Statement : Due to Frenkel defect the density of the crystalline solid remains same. Explanation : In Frenkel defect, no cations or anions leave the lattice.

Ionic lattic has two major points defects ,(1) Schottky (2) Frenkel defects . Schottkly defects occurs due to the cations - anion pair's missing from the lattice sites . Frenkel defects occurs levels its lattic site and fits into an intersitial space. The neturaity of the crystal is benig maintained and we considerd all losses from interstitical positions. which defect decrease density of the crystal ?

Ionic lattic has two major points defects ,(1) Schottky (2) Frenkel defects . Schottkly defects occurs due to the cations - anion pair's missing from the lattice sites . Frenkel defects occurs levels its lattic site and fits into an intersitial space. The neturaity of the crystal is benig maintained and we considerd all losses from interstitical positions. Structure shown here represents :

Ionic lattic has two major points defects ,(1) Schottky (2) Frenkel defects . Schottkly defects occurs due to the cations - anion pair's missing from the lattice sites . Frenkel defects occurs levels its lattic site and fits into an intersitial space. The neturaity of the crystal is benig maintained and we considerd all losses from interstitical positions. Structure shown here represents :

GRB PUBLICATION-SOLID STATE-All Questions
  1. Statement -1 Radius ratios provide a rough idea to what structures are...

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  2. Statement -1 Crystal defect are saomtimes called thermodnamic defect ...

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  3. Statement -1 The energy needed to from a Schottly defect is usually le...

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  4. Statement -1 Generally cation go to void and anion from the lattice ...

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  5. Statement -1 In HCP structure the contribution of hexagonal face corne...

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  6. Statement-1 C.N of Cs^(+) ion in CsCl structure is 8 Statement -2 C...

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  7. Statement -1 In BCC structure, the corrdination number of nearest neih...

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  8. Statement -1 All crystal have defect Statement -2 Sometimes vacancis...

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  9. Statement -1 If alphais the unit cell length of a cubic lattice, the a...

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  10. Statement -1 The erutile structure is not close packes Statement -2 ...

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  11. Statement -1 At absolute zero, crystal tend to have a perfectly ordere...

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  12. Statement -1 Migration to the smaller ion usually the cation into the ...

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  13. Which of the following crystal will have at least two axial angle 90^(...

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  14. An ionic compound consists of only A^9+1),B^(+2)and C^(-3) ions Which ...

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  15. Which of the following statements is/are correct with respect to cryst...

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  16. Which of the following options(s) is/are incorrect with respect to cub...

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  17. Identify the statements which is/are correct.

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  18. An element A (Atomic weight = 12) having bcc structure has unit cell e...

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  19. Which of the following statements are incorrect with respect to crysta...

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  20. Which of the following is not true about the voids formed in 3 dimensi...

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