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Wich is the incorrect statement?...

Wich is the incorrect statement?

A

`FeO_(0.98)` has non stoichiometric metal deficiency defect

B

Density decreases in case of crystals with Schottky's defect

C

NaCl(s) is insulator, silicon is semiconductor, silver is conductor, quartz is piezo electric crystal

D

Frenkel defect is favoured in those ionic compounds in which sizes of cation and anions are almost equal

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The correct Answer is:
A, D
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AAKASH INSTITUTE ENGLISH-THE SOLID STATE -Assignment (SECTION - C) (PREVIOUS YEARS QUESTION)
  1. Wich is the incorrect statement?

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  2. In the calcium fluoride structure, the coodination number of the catio...

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  3. Lithium has a bcc structure .Its density is 530 kg m^(-3) and its atom...

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  4. The ionic radii of A^(+) and B^(-) ions are 0.98xx10^(-10)m and 1.81xx...

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  5. The vacant space in bcc lattice cell is

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  6. The correct statement regarding defects in the crystalline solid is

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  7. A given metal crystallises out with a cubic structure having edge leng...

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  8. If a is the length of the side of a cube, the distance between the bod...

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  9. A metal has an fcc latticed.The edge length of the unit cell is 404 pm...

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  10. The unit cell of diamond is made up of:

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  11. a metal crystallizes with a face-centered cubic lattice.The edge of th...

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  12. The total number of octahedral void (s) per atom present in a cubic cl...

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  13. Structure of a mixed oxide is cubic closed - packed (ccp) .The cubic u...

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  14. A solid compound XY has NaCl structure. If the radius of the cation is...

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  15. AB crystallizes in a body centred cubic lattice with edge length a equ...

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  16. Among the following which one has the highest cation to anion size rat...

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  17. Lithium metal crystallizes in a body centred cubic crystals. If the le...

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  18. Copper crystallises in fcc with a unit cell length of 361 pm. What is ...

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  19. If 'a' stands for the edge length of the cubic systems : simple cubic,...

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  20. the percentage of empty space in a body centred cubic arrngemen...

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