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Which of the following has the smallest ...

Which of the following has the smallest heat of hydrogenation per mole ?

A

cls`-2-`Butene

B

trans`-2-`Butene

C

`1-`Butene

D

`1,3-`Butadiene

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The correct Answer is:
D
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ALLEN-ALKENE, ALKANE & ALKYNE -EXERCISE-1
  1. The reduction of 4-octyne with H2 in the presence of Pd//CaCO3 quinol...

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  2. The ease of formation of free radicals follows the order -

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  3. Which of the following has the smallest heat of hydrogenation per mole...

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  4. The intermediate during the addition of HCl to propene n presence of p...

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  5. The order of stability of the alkenes underset(I)(R(2)C=CR(2)') unde...

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  6. Which of the following will not react with an ammonical silver nitrate...

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  7. The correct order of reactivity towards the electrophillic substituion...

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  8. Which of the following order is correct for the decreasing reactivity ...

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  9. Electrophile overset(o+)NO(2) attacks the following : In which ca...

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  10. The most deactivating group for electrophilic substitution reaction in...

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  11. Which of the following is the most reactive towards ring nitration ?

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  12. The order decreasing reactivity towards an electrophilic reagent, for ...

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  13. Increasing order of the following for electrophilic substitution react...

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  14. Among the compounds the order of decreasing reactivity towards electro...

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  15. Choose the most reactive among the following compound :

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  16. Write the structures of possible isomers of dichlorobenzene.

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  17. The major product form by the monobromination of phenyl benzoate is

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  18. The major product formed in the reaction is:

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  19. The electrophilic aromatic substitution of a compound C(6)H(5)Y produc...

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  20. Which of the following is an o-, p-directing but deactivating substitu...

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