66. Material with lowest temperature coefficient:

1. 1. Kanthan

   
   
   

   2. Nichrome

   
   
   

   3. Nickle

   
   
   

   4. Copper

   
   
   

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   NA

   Correct Option: B

   NA

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67. Which of the following figure represents a ferrimagnetic material?
    
    
    

1. 1. Fig. A

   
   
   

   2. Fig. B

   
   
   

   3. Fig. C

   
   
   

   4. Fig. D

   
   
   

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   NA

   Correct Option: B

   NA

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68. Magnetic recording tape is most commonly made from:

1. 1. small particles of iron

   
   
   

   2. silicon iron

   
   
   

   3. ferric oxide

   
   
   

   4. None of these

   
   
   

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   Magnetic recording tape is most commonly made from ferric oxide.

   Correct Option: C

   Magnetic recording tape is most commonly made from ferric oxide.

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69. Ionic bonding in solids depends primarily on:

1. 1. Vander Waals forces

   
   
   

   2. electrical dipoles

   
   
   

   3. sharing of electrons

   
   
   

   4. transfer of electrons

   
   
   

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   Ionic bonding in solids depends primarily on transfer of electrons.

   Correct Option: D

   Ionic bonding in solids depends primarily on transfer of electrons.

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70. Stainless steels are alloys of:

1. 1. Fe and Ni

   
   
   

   2. Fe, Cr and Ni

   
   
   

   3. Fe, Cr and Mo

   
   
   

   4. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   Stainless steels are alloys of Fe, Cr and Ni.

   Correct Option: B

   Stainless steels are alloys of Fe, Cr and Ni.

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