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The number of Pentagons and Hexagons, re...

The number of Pentagons and Hexagons, respectively in Co-Fullerence are 

A

`10&20`

B

`30&30`

C

`20&10`

D

`12&20`

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The correct Answer is:
D
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AAKASH SERIES-ELEMENTS OF CARBON FAMILY-OBJECTIVE EXERCISE - 2
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  2. The hybrid orbitals with 33.33% s-character are involved in the bondin...

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  3. The number of Pentagons and Hexagons, respectively in Co-Fullerence ar...

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  4. The hybridisation of C in diamond, graphite and ethyne is in the order

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  5. Silica is insoluble

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  6. SiO2 is a solid while CO2 is a gas - explain.

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  7. In hydrofluorosilicic acid the covalency of Si is

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  8. Regarding silica I) Quartz is amorphous form of silica II) Silica ...

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  9. SiO(2) reacts with which of the following to form water glass

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  10. Which of the following is a crystalline form of silica ?

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  11. Hybridisation of carbon atom in carbon dioxide is

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  12. Which of the following acts as a reducing agent ?

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  13. The C-O bond order in CO and CO(2) respectively

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  14. The high poisonous nature of CO is due to its

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  16. Which of the following statements is correct?

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  17. A colourless gas which burns with blue flame and reduces CuO to Cu is

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  18. Maximum covalency exhibited by Carbon and Silicon respectively are

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  19. Two tetravalent elements A and B form dioxides. Both react with NaOH ...

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  20. Correct statements regarding silicones are a) They are used in the...

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