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Confirm the presence of three C=C in ben...

Confirm the presence of three `C=C` in benzene

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Benzene can add on to three moles of hydrogen in the presence of nickel catalyst to give cyclohexane.
`C_(6)H_(6)+3H_(2)overset("Raney" Ni)(to)underset("Cyclohexane")(C_(6)H_(12)+HBr)`
This conrms cyclic structure of benzene and the presence of three carbon-carbon double bond.
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SURA PUBLICATION-HYDROCARBONS-Short Answers Questions
  1. Prove -All the six hydrogens in benzens are identical .

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  2. Why straight chain structure of benzene is not possible?

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  3. Confirm the presence of three C=C in benzene

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  4. Write a short note on resonance in benzene .

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  5. Why ,benzene undergoes substitution reaction more readily than additio...

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  6. Convert bromobenzene to toluene and name the process .

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  7. What happens when water is treated with ethyne and propyne?

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  8. How does the ozone gets add on to the C-=C?

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  9. Write an account on the following reactions involving formation of alk...

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  10. Write an account on the following reactions involving formation of alk...

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  11. Write an account on the following reactions involving formation of alk...

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  12. What happens when alkane is , (i) burnt in air (ii) aromatized (...

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  13. Write a short note on the following . Aromatisation

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  14. Write a short note on the following . Pyrolysis

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  15. List out the uses of alkanes .

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  16. Explain the isomerism exhibited by alkenes.

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  17. Write a note on the following reactions. Dehydration of ethanol

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  18. Write a note on the following reactions. Electrolysis of potassium su...

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  19. Write a note on the following reactions. Chlorination of ethene

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  20. Write a brief note on polymerisation of alkenes.

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