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Resonance in a molecule results in...

Resonance in a molecule results in

A

Destabilisation

B

Stabilisation

C

Change in bond length

D

Both 2 and 3

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The correct Answer is:
D
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The resonance effect is defined as 'the polarity produced in the molecule by the interaction of two pi -bonds or between a pi -bond and lone pair of electrons present on an adjacentatom.' The effect is transmitted through the chain. In positive resonance effect, the transfer of electrons is away from an atom or substituent group attached to the conjugated system. This electron displacement makes certain positions in the molecule of high electron densities. In negative resonance effect, the transfer of electrons is towards the atom or substituent group attached to the conjugated system. Which of the following does not show resonance effect ?

The resonance effect is defined as 'the polarity produced in the molecule by the interaction of two pi -bonds or between a pi -bond and lone pair of electrons present on an adjacentatom.' The effect is transmitted through the chain. In positive resonance effect, the transfer of electrons is away from an atom or substituent group attached to the conjugated system. This electron displacement makes certain positions in the molecule of high electron densities. In negative resonance effect, the transfer of electrons is towards the atom or substituent group attached to the conjugated system. What is the IUPAC name for :

The resonance effect is defined as 'the polarity produced in the molecule by the interaction of two pi -bonds or between a pi -bond and lone pair of electrons present on an adjacentatom.' The effect is transmitted through the chain. In positive resonance effect, the transfer of electrons is away from an atom or substituent group attached to the conjugated system. This electron displacement makes certain positions in the molecule of high electron densities. In negative resonance effect, the transfer of electrons is towards the atom or substituent group attached to the conjugated system. Which of the following shows +M effect ?

The resonance effect is defined as 'the polarity produced in the molecule by the interaction of two pi -bonds or between a pi -bond and lone pair of electrons present on an adjacentatom.' The effect is transmitted through the chain. In positive resonance effect, the transfer of electrons is away from an atom or substituent group attached to the conjugated system. This electron displacement makes certain positions in the molecule of high electron densities. In negative resonance effect, the transfer of electrons is towards the atom or substituent group attached to the conjugated system. Which of the following carboxylate ions is the most stable ?

AAKASH INSTITUTE ENGLISH-ORGANIC CHEMISTRY: SOME BASIC PRINCIPLE AND TECHNIQUES-ASSIGNMENT SECTION-A COMPETITION LEVEL QUESTIONS
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  2. The reaction intermediate produce by homolytic cleavage of bond is cal...

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  3. Ammonia is iso-structural with:

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  4. A mixture of camphor and benzoic acid can be separated by

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  5. In Kjeldahl's method, nitrogen present is estimated as

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  6. In sodium fusion test of organic compounds, the nitrogen of an organic...

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  7. In Dumas' method, the gas (or vapor) which is collected in the nitrome...

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  8. 0.2 g of an organic compound on comptete combustion produces 0.18 g of...

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  9. In a Lassaigne's test for sulphur in the organic compound with sodium ...

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  10. Lassaigne's test for the detection of nitrogen will fail in case of :

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  11. The Lassaigne's extract is boiled with dil. HNO(3) before testing for ...

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  12. The purity of an organic compound is determined by

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  13. 0.32 g of an organic compound gave 0.233 g of BaSO(4). Determine the p...

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  14. Hyperconjugation is most useful for stabilizing which of the following...

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  15. Resonance in a molecule results in

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  16. Hyperconjugation involves overlap of which of the following orbitals?

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  17. How many bonds are there in

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  18. this hydrocarbon has hybridization

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  19. Considering the state of hybridisation of carbon atoms, find out the m...

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  20. The best and latest technique for isolation, purification and separati...

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