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Elemental carbon appears in many structu...

Elemental carbon appears in many structural forms or allotropes . Three of these formssare crystalline -diamond ,graphite and the recentluy discovered fullerne (bucky ball ) -while more than ` 40` others including coke and carbon black ae amorphous . Now there seems to be set afourth crystalline allotrope of carbon. reported in `1995` by ` Lagow at the University of Texas .
Newly discovered allotrope if carbon has the form :

A

polyyne

B

fullerene

C

bucky ball

D

none of these

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The correct Answer is:
A
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Elemental carbon appears in many structural forms or allotropes . Three of these formssare crystalline -diamond ,graphite and the recentluy discovered fullerne (bucky ball ) -while more than 40 others including coke and carbon black ae amorphous . Now there seems to be set afourth crystalline allotrope of carbon. reported in 1995 by Lagow at the University of Texas . Structures fodifferentallotropes of carbon have been compared . Which represents incorrect comparison ?

Name two allotropes of carbon

Name the crystalline forms of carbon.

What is the name of recently discovered allotropes of carbon?

Name the different allotropes of carbon.

_________ is a soft crystalline form of carbon.

C_(60) , an allotrope of carbon contains :

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  3. Silicones are sunthetic polyners conitainging repeated R2 SiO units . ...

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  4. Silicones are sunthetic polyners conitainging repeated R2 SiO units . ...

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  5. The name 'silica' covers an entire froup of minerals which have the ge...

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  6. The name 'silica' covers an entire froup of minerals which have the ge...

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  9. In some foam-type fre extinguishers, the treactants are Al2 (SO4)3 (aq...

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  12. CO2 and H2 O absorbs strongly in the infrared rrgion and its presence ...

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  13. CO2 and H2 O absorbs strongly in the infrared rrgion and its presence ...

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  14. CO2 and H2 O absorbs strongly in the infrared rrgion and its presence ...

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  15. In the first biological applicativon of bucky ball , chemists at the U...

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  16. In the first biological applicativon of bucky ball , chemists at the U...

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  17. In the first biological applicativon of bucky ball , chemists at the U...

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  18. In the first biological applicativon of bucky ball , chemists at the U...

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  19. Elemental carbon appears in many structural forms or allotropes . Thre...

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  20. Elemental carbon appears in many structural forms or allotropes . Thre...

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