171. Metallic bonding is due to:

1. 1. sharing of electrons between adjacent atoms

   
   
   

   2. over-lapping of electron clouds

   
   
   

   3. attraction between ion cores

   
   
   

   4. attraction between ion cores and electrons

   
   
   

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1. View Hint View Answer Discuss in Forum

   Metallic bonding is due to attraction between ion cores and electrons.

   Correct Option: D

   Metallic bonding is due to attraction between ion cores and electrons.

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172. The electrostatic nature of ionic bond makes it:

1. 1. directional

   
   
   

   2. non-directional

   
   
   

   3. weak

   
   
   

   4. applicable to group IV elements

   
   
   

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1. View Hint View Answer Discuss in Forum

   The electrostatic nature of ionic bond makes it nondirectional.

   Correct Option: B

   The electrostatic nature of ionic bond makes it nondirectional.

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173. 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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1. View Hint View Answer Discuss in Forum

   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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174. 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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175. 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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1. View Hint View Answer Discuss in Forum

   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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