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Which of the following resonating struct...

Which of the following resonating structures of `1-`methoxy-`1`,`3`-butadiene is least stable?

A

B

C

D

Text Solution

Verified by Experts

The correct Answer is:
D
ln (4) negative charge and lone pair on adjacent position.
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RESONANCE-GENERAL ORGANIC CHEMISTRY-I-PRACTICE TEST-1
  1. Stability of pi-bond in following alkenes in the increasing order is :...

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  2. Select the correct satement regarding the following compouns :

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  3. Which of the following resonating structures of 1-methoxy-1,3-butadien...

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  4. Select the correct option related to stability of following structures...

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  5. The minimum magnitude of heat of hydrogenation per mole of molecule is...

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  6. The decreasing order of electron density on the ring is:

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  7. Hyperconjugation observed in

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  8. The number of hyperconjugable hydrogen atoms of following species are...

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  9. In the following sets of resonating structure, lable the major contrib...

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  10. In which of the following C=C bond length is minimum?

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  11. Which of the following compound is non aromatic :

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  12. Which compound has least e^(-) density in benzene ring

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  13. The order of heat of hydrogenation in following compounds is:

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  14. Resonance stabilized cation is:

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  15. In an anion HCOO^- the two carbon-oxygen bonds are found to be equal l...

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  16. Compare C-N bond length in the following :

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  17. Which of the following is false for order of -l effect :

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  18. underset("x")(H-N=C=O)harrunderset("y")(H-overset(o+)N-=C-overset(Thet...

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  19. The aromatic compound would be :

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  20. Number of delocalized e^(-) pairs in squaric acid and dianion of squar...

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