- 1(current)
Q. No.The following carbocation is stabilized by the interactions of the empty p orbital with :
| 1. | empty \(\sigma^*\) and empty \(\pi^*\) orbitals |
| 2. | filled \(\sigma\) and filled \(\pi\) orbitals |
| 3. | empty \(\sigma\) and empty \(\pi^*\) orbitals |
| 4. | empty \(\sigma^*\) and filled \(\pi\) orbitals |
Subtopic: Â Electron Displacement Effects |Â Reaction Intermediates ; Preparation & Properties |
Level 3: 35%-60%
NEET - 2026
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The stabilization of a carbocation by an attached methyl group is primarily due to:
| 1. | -I inductive effect | 2. | Electromeric effect |
| 3. | Hyperconjugation | 4. | Mesomeric effect |
Subtopic: Â Electron Displacement Effects |
 72%
Level 2: 60%+
NEET - 2024
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Given below are two statements:
1. Statement I is true but Statement II is false
2. Statement I is false but Statement II is true
3. Both Statement I and Statement II are true
4. Both Statement I and Statement II are false
| Statement I: | In an organic compound, when inductive and electromeric effects operate in opposite directions, the inductive effect predominates. |
| Statement II: | Hyperconjugation is observed in o-xylene. |
1. Statement I is true but Statement II is false
2. Statement I is false but Statement II is true
3. Both Statement I and Statement II are true
4. Both Statement I and Statement II are false
Subtopic: Â Electron Displacement Effects |
Level 3: 35%-60%
NEET - 2023
Hints
Select the correct option based on the statements below:
| Assertion (A): | Chlorine is an electron-withdrawing group, yet it exhibits ortho- and para-directing behavior in electrophilic aromatic substitution. |
| Reason (R): | Inductive effect of chlorine destabilises the intermediate carbocation formed during the electrophilic substitution, however due to the more pronounced resonance effect, the halogen stabilises the carbocation at ortho and para positions. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Â Electron Displacement Effects |
 78%
Level 2: 60%+
NEET - 2022
Hints
A tertiary butyl carbocation is more stable than a secondary butyl carbocation because-
1. + R effect of groups
2. R effect of CH3 groups
3. Hyperconjugation
4. l effect of CH3 groups
Subtopic: Â Electron Displacement Effects |Â Reaction Intermediates ; Preparation & Properties |
 76%
Level 2: 60%+
NEET - 2020
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- 1(current)
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