Decreasing -$\mathrm{I}$ effect of given groups is:
$\left(\mathrm{i}\right)$ $-\mathrm{CN}$
$\left(\mathrm{ii}\right)$ $-{\mathrm{NO}}_2$
$\left(\mathrm{iii}\right)$ $-{\mathrm{NH}}_2$
$\left(\mathrm{iv}\right)$ $-\mathrm{Cl}$

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 1>Q 193

Which is the correct order of inductive effect?

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Alpha Question Bank for Medical: Chemistry>Chapter 21 - Organic Chemistry- Some Basic Principles and Techniques>Exercise 1>Q 194

Arrange the following compounds in decreasing order of their dipole moment.

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Alpha Question Bank for Medical: Chemistry>Chapter 21 - Organic Chemistry- Some Basic Principles and Techniques>Exercise 1>Q 195

Resonance effect involves:

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Alpha Question Bank for Medical: Chemistry>Chapter 21 - Organic Chemistry- Some Basic Principles and Techniques>Exercise 1>Q 196

In which of the following delocalisation of $\mathrm{\pi }$ -electron is possible.

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Alpha Question Bank for Medical: Chemistry>Chapter 21 - Organic Chemistry- Some Basic Principles and Techniques>Exercise 1>Q 197

Which of the following compounds show resonance?

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Alpha Question Bank for Medical: Chemistry>Chapter 21 - Organic Chemistry- Some Basic Principles and Techniques>Exercise 1>Q 198

In which compound delocalisation is not possible:

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Alpha Question Bank for Medical: Chemistry>Chapter 21 - Organic Chemistry- Some Basic Principles and Techniques>Exercise 1>Q 199

Which of the following pairs are resonating structures?

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Alpha Question Bank for Medical: Chemistry>Chapter 21 - Organic Chemistry- Some Basic Principles and Techniques>Exercise 1>Q 200

Stability of ${\mathrm{C}}^{+}{\mathrm{H}}_2-\mathrm{CH}={\mathrm{CH}}_2$ can be explained by: