Diamonds


 
 
Concept Explanation
 

Diamonds

Diamond

Diamond is a very hard usually colorless stone that is a form of carbon and is used especially in jewelry.

General Properties :-

  • It is a colourless transparent substance with extra ordinary brilliance due to its high refractive index.
  • It is quite heavy and extremely hard (hardest natural substance known).
  • It does not conduct electricity (because of the absence of free electrons) but it has high thermal conductivity and high melting point.
  • Structure:-

    It is a giant molecule of carbon atom is linked to four other carbon atoms by strong covalent bonds forming a rigid three-dimensional network structure, which is responsible for its hardness. Moreover, a lot of energy is required to break the network of strong covalent bonds in the diamond crystal, thus its melting point is very high.

    Uses :-

    • Due to its hardness it is used as knives for cutting marble, granite and glass.

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    Sample Questions
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    Question : 1

    Diamond shines due to its:

    Right Option : B
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    Question : 2

    Name the allotrope of carbon that is a colourless transparent substance with extraordinary brilliance due to its high refractive index.

    Right Option : B
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    Question : 3

    Diamond can be prepared artificially by subjecting pure carbon to ______________________

    Right Option : D
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    Explanation
     
     


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