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Semiconductor Electronics : Materials, Devices and Simple Circuits

  1. Which one of the following bonds produces a solid that reflects light in the visible region and whose electrical conductivity decreases with temperature and has high melting point?​​
    1. metallic bonding
    2. van der Waal’s bonding ​
    3. ionic bonding ​
    4. covalent bonding
Correct Option: A

For a metal, conductivity decreases with increase in temperature. ​Also, metal has high melting point.



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