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Why is diamond hard ?...

Why is diamond hard ?

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Why diamond is hard compared with graphite?

Explain the following and give reasons : (a) diamond is hard, but graphite is soft , (b) diamond is insulator, but graphite is a conductor.

Which property is common in diamond and graphite ?

Give the hybridization of carbon in diamond and fullerene.

Explain the difference in properties of diamond and graphite on the basis of their structure.

Explain the differences in properties of diamond and graphite on the basis of their structures.

Assertion (A) : Diamond is one of the hardest materials. Reason (R): The C-C bonds in diamond are very strong and requires large amounts of energy to distroy.

Why the use of hard water is disadvantages?

e) The refractive index of diamond is much greater than that of ordinary glass. Is this fact of some use to a diamond cutter ?

VGS PUBLICATION-BRILLIANT-CARBON AND ITS COMPOUND-EXERCISE
  1. Why does carbon form compounds mainly by covalent bonding?

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  2. Allotropy is a property shown by which class of substances:elements, c...

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  3. Why is diamond hard ?

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  4. Identify the unsaturated compounds of the following :CH3-CH2-CH2

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  5. Identify the unsaturated compounds of the following :CH3-CH=CH2

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  6. Why do sometimes cooking vessels get blackened on a gas or kerosene st...

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  7. Define Isomerism.

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  8. Draw the structure of isomers of butane.

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  9. What happens when a small piece of sodium is dropped into ethanol?

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  10. What type of reaction takes place between ethane and chlorine?

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  11. What are the two properties of carbon which lead to the huge number of...

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  12. Draw the structure for the following compounds : Propanoic acid

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  13. Draw the structure for the following compounds : Chlorobutane

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  14. Draw the structure for the following compounds : Hexanone

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  15. Draw the structure for the following compounds : Pentanal

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  16. How could you name the following compounds ? CH3-CH2-CH2-Br

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  17. How could you name the following compounds ? CH3-CH2-CH2-CH2-C-=CH

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  18. An organic compound X with a molecular formula C2 H6 O undergoes oxida...

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  19. A mixture of oxygen and ethyne is burnt for welding. Can you tell why ...

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  20. How do you prepare Ethanol from ethene?

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