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Explain why the carbon -carbon bond in a...

Explain why the carbon -carbon bond in acetylene is shorter than the carbon-carbon bond in ethylene.

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`sigma` -bond in acetylene `(HC-=CH)` is formed due to overlapping of two small sp-hybridised orbitals whereas in ethylene `(H_2C=CH_2)` it is formed by overlapping of two bigger `sp^2` hybridised orbitals. So, bond lengh of `HC-=CHlt H_2C=CH_2`
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CHHAYA PUBLICATION-HYDROCARBONS-EXERCISE (SHORT-TYPE QUESTIONS)
  1. Explain why 1-butyne reacts with ammoniacal silver nitrate to produce ...

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  2. How will you detect the presence of acetylene in a gas mixture ?

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  3. Explain why acetylene exhibits acidic character.

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  4. Give reaction to prove tha acidic character of acetylene.

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  5. Explain why acetylene burns with a luminous flame.

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  6. Prove that acetylene is an unsaturated hydrocarbon.

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  7. How can acetylene be transported from one place to another ?

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  8. Explain why the carbon -carbon bond in acetylene is shorter than the c...

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  9. How will you distinguish between ethylene and acetylene ?

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  10. How is artificial rubber prepared from neoprene ?

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  11. What do you mean by the term aromaticity ?

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  12. state the moden theory regarding the structure of benzene.

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  13. Write Huckle's rule. Explain with examples.

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  14. What do you mean by benzenoid and non-benzenoid aromatic compounds ? G...

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  15. What information about the structure of benzene you may get from the p...

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  16. Explain the formation of nitronium ion (overset(oplus)NO2) from the re...

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  17. Why is isopropyl benzene formed as the major product in the reaction o...

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  18. Nitrobenzene is used as a solvent in Friedel-Crafts reaction-why ?

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  19. Why does aniline not participate in Friedel-Crafts reaction ?

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  20. How is CH3overset(oplus)CO formed during the reaction between CH3COCl ...

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