96. A semiconductor is electrically neutral because it has:

1. 1. no majority carriers

   
   
   

   2. no minority carriers

   
   
   

   3. no free carriers

   
   
   

   4. equal positive and negative carriers

   
   
   

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   A semiconductor is electrically neutral because it has equal positive and negative carriers.

   Correct Option: D

   A semiconductor is electrically neutral because it has equal positive and negative carriers.

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97. Amorphous structure is observed in:

1. 1. manganese

   
   
   

   2. glass

   
   
   

   3. quartz

   
   
   

   4. nickel

   
   
   

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   NA

   Correct Option: B

   NA

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98. Match List-I with List-II, and select the correct answer using the codes given below the lists:
    

    List-I (Materials)	List-II (Applications)
    A.Platinum	1. Computer memory core
    B. Ferrites	2. Ferroelectric
    C. Selenium	3.Contact material
    D. Rochelle salt	4. Solar battery

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

   
   
   

   2. A B C D
      2 4 3 1

   
   
   

   3. A B C D
      3 1 4 2

   
   
   

   4. A B C D
      4 3 1 2

   
   
   

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   List-I		List-II
   Platinum	→	Contact material
   Ferrites	→	Computer memory core
   Selenium	→	Solar battery
   Rochelle salt	→	Ferroelectric

   Correct Option: C

   List-I		List-II
   Platinum	→	Contact material
   Ferrites	→	Computer memory core
   Selenium	→	Solar battery
   Rochelle salt	→	Ferroelectric

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99. Magnetic head recorder is made of:

1. 1. metallic glass

   
   
   

   2. rochelle salt

   
   
   

   3. ferrous alloy

   
   
   

   4. nonferrous metal

   
   
   

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   Magnetic head recorder is made of metallic glass.

   Correct Option: A

   Magnetic head recorder is made of metallic glass.

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100. Out of the 4 electrode materials, highest emission efficiency is given by:

1. 1. Tungsten

   
   
   

   2. Thoriated tungsten

   
   
   

   3. Oxide coated cathode

   
   
   

   4. Cesium

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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