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PASSAGE-I : Diamond and graphite are two...

PASSAGE-I : Diamond and graphite are two allotropic forms of carbon which are crystalline in nature. They differ physically but chemically they are similar. Diamond is the hardest crystalline form of carbon. In diamond each carbon atom is linked to four other carbon atoms by covalent bonds. In graphite, each carbon atom is linked to three other carbon atoms by covalent bond. Graphite is relatively soft and greasy. It is a good conductor or electricity.
Graphite is a good conductor of electricity because

A

it has free electrons

B

it has free atoms

C

it is crystalline

D

it is soft and greasy

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The correct Answer is:
A
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PASSAGE-I : Diamond and graphite are two allotropic forms of carbon which are crystalline in nature. They differ physically but chemically they are similar. Diamond is the hardest crystalline form of carbon. In diamond each carbon atom is linked to four other carbon atoms by covalent bonds. In graphite, each carbon atom is linked to three other carbon atoms by covalent bond. Graphite is relatively soft and greasy. It is a good conductor or electricity. Which of the following is a goos conductor of heat and electricity?

PASSAGE-I : Diamond and graphite are two allotropic forms of carbon which are crystalline in nature. They differ physically but chemically they are similar. Diamond is the hardest crystalline form of carbon. In diamond each carbon atom is linked to four other carbon atoms by covalent bonds. In graphite, each carbon atom is linked to three other carbon atoms by covalent bond. Graphite is relatively soft and greasy. It is a good conductor or electricity. Which of the folowing types of forces bind together the carbon atoms in diamond?

PASSAGE-I : Diamond and graphite are two allotropic forms of carbon which are crystalline in nature. They differ physically but chemically they are similar. Diamond is the hardest crystalline form of carbon. In diamond each carbon atom is linked to four other carbon atoms by covalent bonds. In graphite, each carbon atom is linked to three other carbon atoms by covalent bond. Graphite is relatively soft and greasy. It is a good conductor or electricity. Which allotrope gives carbon dioxide on heating?

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MTG IIT JEE FOUNDATION-CARBON AND ITS COMPOUNDS -Comprehension Type
  1. PASSAGE-I : Diamond and graphite are two allotropic forms of carbon wh...

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  2. PASSAGE-I : Diamond and graphite are two allotropic forms of carbon wh...

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  3. PASSAGE-I : Diamond and graphite are two allotropic forms of carbon wh...

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  4. PASSAGE-I : Diamond and graphite are two allotropic forms of carbon wh...

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  5. PASSAGE-II : In all the organic compounds, the four valencies of carbo...

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  6. PASSAGE-II : In all the organic compounds, the four valencies of carbo...

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  7. PASSAGE-II : In all the organic compounds, the four valencies of carbo...

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  8. PASSAGE-II : In all the organic compounds, the four valencies of carbo...

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  9. PASSAGE-III : Structural formmulae of some organic compounds are given...

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  10. PASSAGE-III : Structural formmulae of some organic compounds are given...

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  11. PASSAGE-III : Structural formmulae of some organic compounds are given...

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  12. PASSAGE-III : Structural formmulae of some organic compounds are given...

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  13. PASSAGE-IV : A neutral organic compound A of molecular formula C(2)H(6...

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  14. PASSAGE-IV : A neutral organic compound A of molecular formula C(2)H(6...

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  15. A neutral organic compound A of molecular formula C(2)H(6)O, on oxidat...

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  16. PASSAGE-IV : A neutral organic compound A of molecular formula C(2)H(6...

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  17. PASSAGE-V : In the above sequences of reaction A is

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  18. PASSAGE-V : The compound B is

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  19. PASSAGE-V : In the sequence of reaction C is

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  20. PASSAGE-V : The reagent D is

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