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Q.

 List-I List-II
(A)Crystal defect(1)Amorphous
(B)SiC(2)Frenkel
(C)Quartz glass(3)Covalent crystal


The correct match is as A B C respectively is 

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a

A3; B1; C2

b

A2; B1; C3

c

A2; B3; C1

d

A1; B2; C3

answer is C.

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Detailed Solution

 A Frenkel defect is another form of a point defect which is created when an atom or cation leaves its original place in the lattice structure to create a vacancy while occupying another interstitial position within the solid crystal. Quartz glass is an amorphous solid because it is formed by fusing the crystal and then cooling it rapidly. Carborundum(SiC) is a covalent crystal. 

Hence the correct answer is (C) 

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