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Which of the following resonance structures does not represent the correct stability order:

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Important Questions on Organic Chemistry- Some Basic Principles and Techniques

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Alpha Question Bank for Medical: Chemistry>Chapter 21 - Organic Chemistry- Some Basic Principles and Techniques>Exercise 2>Q 146

The most stable resonating structure of following compound is:

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Alpha Question Bank for Medical: Chemistry>Chapter 21 - Organic Chemistry- Some Basic Principles and Techniques>Exercise 2>Q 147
Which of the following series contains atoms/groups having only -m (mesomeric) effect?
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Alpha Question Bank for Medical: Chemistry>Chapter 21 - Organic Chemistry- Some Basic Principles and Techniques>Exercise 2>Q 148
Which of the following group can exert both the +M and -I effect?
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Alpha Question Bank for Medical: Chemistry>Chapter 21 - Organic Chemistry- Some Basic Principles and Techniques>Exercise 2>Q 149
Hyper conjugation is possible in:
 
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Alpha Question Bank for Medical: Chemistry>Chapter 21 - Organic Chemistry- Some Basic Principles and Techniques>Exercise 2>Q 150
Which of the following compounds has inductive, mesomeric and hyperconjugative effect?
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Alpha Question Bank for Medical: Chemistry>Chapter 21 - Organic Chemistry- Some Basic Principles and Techniques>Exercise 2>Q 151

Select the correct order of heat of hydrogenation in the following compounds?

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Alpha Question Bank for Medical: Chemistry>Chapter 21 - Organic Chemistry- Some Basic Principles and Techniques>Exercise 2>Q 152
Select the correct statement.
(i) Delocalisation of  σ-electron is hyperconjugation.
(ii) Delocalisation of  π -electron is resonance.
(iii) Partial displacement of ​σ-electron is inductive effect.
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Alpha Question Bank for Medical: Chemistry>Chapter 21 - Organic Chemistry- Some Basic Principles and Techniques>Exercise 2>Q 153
Hyperconjugation is possible in