206. The Miller indices of the diagonal plane of a cube are:

1. 1. 110

   
   
   

   2. 111

   
   
   

   3. 100

   
   
   

   4. 000

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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207. The crystal structure of most of the common metals is:

1. 1. hexagonal

   
   
   

   2. cubic

   
   
   

   3. orthorhombic

   
   
   

   4. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   The crystal structure of most of the common metals is cubic.

   Correct Option: B

   The crystal structure of most of the common metals is cubic.

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208. The nature of atomic bond found in diamond is:

1. 1. ionic

   
   
   

   2. covalent

   
   
   

   3. metallic

   
   
   

   4. None of these

   
   
   

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   The nature of atomic bond found in diamond is covalent.

   Correct Option: B

   The nature of atomic bond found in diamond is covalent.

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209. Match List-I with List-II, and choose the correct answer from the codes given below the lists:
     

     List-I	List-II
     A.Whisker	1. Above recrystallization temperature
     B. Crystal growth	2. Highly purified n-type silicon
     C. Hot working	3. Elongated single crystal
     D. Controlled melt chilling	4. Above 0·5 Tm
     	5. Ultrafine grains
     	6. Preferred orientation

1. 1. A B C D
      3 4 1 2

   
   
   

   2. A B C D
      1 2 4 3

   
   
   

   3. A B C D
      2 1 6 5

   
   
   

   4. A B C D
      6 3 5 4

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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210. The overall electrical neutrality is maintained in:

1. 1. Frenkel’s defect

   
   
   

   2. screw dislocation

   
   
   

   3. low angle boundary defect

   
   
   

   4. none of the above

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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