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The allotropic forms of carbon showing c...

The allotropic forms of carbon showing conductivity are

A

Diamond

B

Diamond and Lamp balck

C

Gas carbon, petroleum coke and graphite

D

Gas carbon and animal charcoal

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The correct Answer is:
B
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Carbon shows allotropy. The various allotropic forms of carbon can be broadly classified into 2 classes a) Crystalline form b) Amphorous form Diamond and Graphite are the 2 crystalline forms of carbon. In diamond, the carbon atoms are arranged tetrahedrally while in graphite, the carbon atoms are arranged inregular hexagons in flat parallel layers In (CO_(3)^(2-)) , carbon atoms shows

Carbon shows allotropy. The various allotropic forms of carbon can be broadly classified into 2 classes a) Crystalline form b) Amphorous form Diamond and Graphite are the 2 crystalline forms of carbon. In diamond, the carbon atoms are arranged tetrahedrally while in graphite, the carbon atoms are arranged inregular hexagons in flat parallel layers When diamond is heated at 1800 to 2000^(@)C in valency. It is converted into

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AAKASH SERIES-REVISION EXERCISE -ELEMENTS OF CARBON FAMILY
  1. Correct statements regarding silicones are a) They are used in the...

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  2. Strongest oxidant among the following is

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  3. The allotropic forms of carbon showing conductivity are

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  4. L(1) is the length between two adjacent carbon atoms in a layer and L...

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  5. Which of the following decomposes steam to form dioxide and dihydrogen...

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  6. An acidic flux among the following is

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  7. What is the covalency of silicon in H(2)SiF(6)?

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  8. {:("List -1 " ,"List -2 "),("A) IVA group", "1) Amorphous"),("B) Tridy...

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  9. Incorrect statement regarding CO2 is

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  10. Among the following substituted silanes the one which will give rise t...

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  11. Silicones are used as water proof materials because they have

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  12. When some of Si^(+4) in frame work silicates are replaced by Al^(+3) ...

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  13. The main common constituent of producer gas and water gas is

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  14. The structure and hybridisation of Si(CH(3))(4) is ,

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  15. CO(2) and N(2) are non-supporters of combustion. However, for putting...

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  16. Which of the following does not represent the correct resonance strutu...

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  17. PbCl(4) exists, but PbBr(4) and PbI(4) do not. This is because of

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

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  19. Mark the oxide which is amphoteric in character

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  20. Which of the following halides is least stable and has doubtful existe...

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