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Melting point of cis - But - 2 - ene is ...

Melting point of cis - But - 2 - ene is lower than that of trans - But - 2 - ene. Give reason .

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Assertion : 2,3- dimethyl but -2- ene is more stable than but -2- ene. Reason : 2,3- dimethyl but -2- ene possesses 12 alpha- hydrogen atoms whereas but -2- ene possesses only 6 alph- hydrogen atms and therefore former shows more pronounced hyperconjugation.

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CBSE COMPLEMENTARY MATERIAL-HYDROCARBONS-2- MARK QUESTION
  1. How can ethene be prepared from Ethanol

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  2. How can ethene be prepared from Ethyl bromide ?

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  3. Melting point of cis - But - 2 - ene is lower than that of trans - But...

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  4. Draw the structures of cis and trans Hex -2 - ene.

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  5. Explain with the help of equation : Ozonolysis of propene.

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  6. Give a chemical test to distinguish between ethane and ethene.

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  7. What do you understand by perxide effect (Kharasch effect) ?

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  8. What factor determines the stability of alkene ?

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  9. Arrange the following alkenes in decreasing order of stability : CH(...

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  10. + O(3) overset(Zn)underset(CH(3)COOH)to ? + ?

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  11. An alkene on treatment with HBr in presence of peroxide can generate t...

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  12. What happens when But - 2 - ene reacts with acidified potassium perman...

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  13. You are provided with But - 2 - yne, how will you convert it into : ...

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  14. You are provided with But - 2 - yne, how will you convert it into : ...

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  15. An alkene C(4)H(8) reacts with HBr both in the presence and absence of...

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  16. Arrange ethane, ethene and ethyne in the order of increasing acidity.

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  17. Write the structures of the products A and B of the following reaction...

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  18. Write the structures of the products A and B of the following reaction...

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  19. Give a chemical test to distinguish between ethyne and ethene.

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  20. Out of benzene and toluene, which undergo nitration easily and why ?

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