316. Epitaxial growth in IC chip—

1. 1. May be n-type only

   
   
   

   2. May be p-type only

   
   
   

   3. Involves growth from liquid phase

   
   
   

   4. Involves growth from gas phase

   
   
   

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   NA

   Correct Option: D

   NA

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317. The material popularly used for contacts and interconnections in IC's is—

1. 1. Copper

   
   
   

   2. Aluminium

   
   
   

   3. Silver

   
   
   

   4. Zinc

   
   
   

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   NA

   Correct Option: B

   NA

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318. The typical number of diffusions used in making epitaxial-diffused silicon integrated circuit is—

1. 1. 1

   
   
   

   2. 2

   
   
   

   3. 3

   
   
   

   4. 4
      

   
   
   

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   NA

   Correct Option: C

   NA

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319. The buried layer in an integrated circuit is—

1. 1. Undoped

   
   
   

   2. Doped

   
   
   

   3. Located in the base region

   
   
   

   4. Used to reduce the parasitic capacitance

   
   
   

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   NA

   Correct Option: B

   NA

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320. Epitaxial growth is used in integrated circuit—

1. 1. Because it produces low parasitic capacitance

   
   
   

   2. Because it yields back-to-back isolating junctions

   
   
   

   3. To grow single crystal n-doped silicon on a single crystal p-type substrate

   
   
   

   4. To grow selectively single-crystal p-doped silicon of one resistivity on p-type substrate of a different resistivity
      

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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