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Point defects are present in ....

Point defects are present in ______.

A

Ionic solids

B

Molecular solids

C

Amorphous solids

D

Liquids

Text Solution

Verified by Experts

The correct Answer is:
A
Point defect arises because of movement/ deficiency/ excess of ions
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Assertion (A) : Point defects are the irregularities or deviations from ideal arrangement around a point in a crystalline substance. Reason (R) : Schottky defect is basically a vacancy defect in ionic solids.

Which of the following defects, if present, lowers the density of the crystal ?

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

which of the following point defects are shoen by AgBr (s) crystals ? (a) Schottky defect (b) Frenkel defect ( c) metal ecxess defect (d) Metal deficiency defect

ERRORLESS-SOLID STATE-NCERT BASED QUESTIONS (DEFECTS IN CRYSTAL)
  1. Some polar crystals when heated produce small electrical current. The ...

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  2. With Which one of the following elements silicon should be doped so as...

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  3. Schottky defect occurs mainly in electrovalent compounds where

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  4. Zine oxide is white but it turns yellow on heating . Explain.

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  5. Frenkel defect generally appears in

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  6. The following is not a function of an impurity present in a crystal:

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  7. Point defects are present in .

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  8. If a non-metal is added to the interstitial sites of a metal, then the...

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  9. In AgBr crystal , the ion size lies in the order Ag^(+) lt lt Br^(-) T...

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  10. Which one of the following is the most correct statement?

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  11. The flame colours of metal ions are due to

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  12. Which one of the following crystal does not exhibit Frenkel defect?

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  13. Which of the following defect is seen in FeO

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  14. To get a n- type semiconductor from silicon , it should be doped...

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  15. which kind of defects are introduced by doping ?

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  16. silicon doped with electron rich impurity forms ………. .

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  17. Pure silicon dopend with phosphorus is a

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  18. Te defect that is more likely to occur in almost all types of ionic cr...

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  19. Schottky defect in a crystal arises due to

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  20. The wrong statement about the interstitial compound is

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