Electron Displacement Effects or Polar Effects
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CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317222 Which of the following has minimum \( - {\rm{I}}\)-effect?

1 \(-\mathrm{NO}_{2}\)
2 \(-\mathrm{COOH}\)
3 \(-\mathrm{F}\)
4 \( - \mathop {\rm{N}}\limits^{\rm{ + }} {{\rm{R}}_3}\)
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317223 Assertion :
A compound with delocalised electrons is more stable than that compound would be if all its electrons were localised.
Reason :
The extra stability, a compound gains as a result of having delocalised electrons, is called delocalisation energy.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
AIIMS - 2009
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317224 In the following compounds
supporting img
the order of basicity is:

1 IV \(>\) I \(>\) III \(>\) II
2 III \(>\) I \(>\) IV \(>\) II
3 II \(>\) I \(>\) III \(>\) IV
4 I \(>\) III \(>\) II \(>\) IV
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317225 What is the correct order of acidity of the protons marked A to D in the given compound ?
supporting img

1 \({{\text{H}}_{\text{C}}} > {{\text{H}}_{\text{D}}} > {{\text{H}}_{\text{A}}} > {{\text{H}}_{\text{B}}}\)
2 \(\mathrm{H}_{\mathrm{C}}>\mathrm{H}_{\mathrm{D}}>\mathrm{H}_{\mathrm{B}}>\mathrm{H}_{\mathrm{A}}\)
3 \(\mathrm{H}_{\mathrm{C}}>\mathrm{H}_{\mathrm{A}}>\mathrm{H}_{\mathrm{D}}>\mathrm{H}_{\mathrm{B}}\)
4 \(\mathrm{H}_{\mathrm{D}}>\mathrm{H}_{\mathrm{C}}>\mathrm{H}_{\mathrm{B}}>\mathrm{H}_{\mathrm{A}}\)
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CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317222 Which of the following has minimum \( - {\rm{I}}\)-effect?

1 \(-\mathrm{NO}_{2}\)
2 \(-\mathrm{COOH}\)
3 \(-\mathrm{F}\)
4 \( - \mathop {\rm{N}}\limits^{\rm{ + }} {{\rm{R}}_3}\)
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317223 Assertion :
A compound with delocalised electrons is more stable than that compound would be if all its electrons were localised.
Reason :
The extra stability, a compound gains as a result of having delocalised electrons, is called delocalisation energy.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
AIIMS - 2009
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317224 In the following compounds
supporting img
the order of basicity is:

1 IV \(>\) I \(>\) III \(>\) II
2 III \(>\) I \(>\) IV \(>\) II
3 II \(>\) I \(>\) III \(>\) IV
4 I \(>\) III \(>\) II \(>\) IV
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317225 What is the correct order of acidity of the protons marked A to D in the given compound ?
supporting img

1 \({{\text{H}}_{\text{C}}} > {{\text{H}}_{\text{D}}} > {{\text{H}}_{\text{A}}} > {{\text{H}}_{\text{B}}}\)
2 \(\mathrm{H}_{\mathrm{C}}>\mathrm{H}_{\mathrm{D}}>\mathrm{H}_{\mathrm{B}}>\mathrm{H}_{\mathrm{A}}\)
3 \(\mathrm{H}_{\mathrm{C}}>\mathrm{H}_{\mathrm{A}}>\mathrm{H}_{\mathrm{D}}>\mathrm{H}_{\mathrm{B}}\)
4 \(\mathrm{H}_{\mathrm{D}}>\mathrm{H}_{\mathrm{C}}>\mathrm{H}_{\mathrm{B}}>\mathrm{H}_{\mathrm{A}}\)
JEE - 2023
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CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317222 Which of the following has minimum \( - {\rm{I}}\)-effect?

1 \(-\mathrm{NO}_{2}\)
2 \(-\mathrm{COOH}\)
3 \(-\mathrm{F}\)
4 \( - \mathop {\rm{N}}\limits^{\rm{ + }} {{\rm{R}}_3}\)
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317223 Assertion :
A compound with delocalised electrons is more stable than that compound would be if all its electrons were localised.
Reason :
The extra stability, a compound gains as a result of having delocalised electrons, is called delocalisation energy.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
AIIMS - 2009
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317224 In the following compounds
supporting img
the order of basicity is:

1 IV \(>\) I \(>\) III \(>\) II
2 III \(>\) I \(>\) IV \(>\) II
3 II \(>\) I \(>\) III \(>\) IV
4 I \(>\) III \(>\) II \(>\) IV
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317225 What is the correct order of acidity of the protons marked A to D in the given compound ?
supporting img

1 \({{\text{H}}_{\text{C}}} > {{\text{H}}_{\text{D}}} > {{\text{H}}_{\text{A}}} > {{\text{H}}_{\text{B}}}\)
2 \(\mathrm{H}_{\mathrm{C}}>\mathrm{H}_{\mathrm{D}}>\mathrm{H}_{\mathrm{B}}>\mathrm{H}_{\mathrm{A}}\)
3 \(\mathrm{H}_{\mathrm{C}}>\mathrm{H}_{\mathrm{A}}>\mathrm{H}_{\mathrm{D}}>\mathrm{H}_{\mathrm{B}}\)
4 \(\mathrm{H}_{\mathrm{D}}>\mathrm{H}_{\mathrm{C}}>\mathrm{H}_{\mathrm{B}}>\mathrm{H}_{\mathrm{A}}\)
JEE - 2023
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CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317222 Which of the following has minimum \( - {\rm{I}}\)-effect?

1 \(-\mathrm{NO}_{2}\)
2 \(-\mathrm{COOH}\)
3 \(-\mathrm{F}\)
4 \( - \mathop {\rm{N}}\limits^{\rm{ + }} {{\rm{R}}_3}\)
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317223 Assertion :
A compound with delocalised electrons is more stable than that compound would be if all its electrons were localised.
Reason :
The extra stability, a compound gains as a result of having delocalised electrons, is called delocalisation energy.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
AIIMS - 2009
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317224 In the following compounds
supporting img
the order of basicity is:

1 IV \(>\) I \(>\) III \(>\) II
2 III \(>\) I \(>\) IV \(>\) II
3 II \(>\) I \(>\) III \(>\) IV
4 I \(>\) III \(>\) II \(>\) IV
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317225 What is the correct order of acidity of the protons marked A to D in the given compound ?
supporting img

1 \({{\text{H}}_{\text{C}}} > {{\text{H}}_{\text{D}}} > {{\text{H}}_{\text{A}}} > {{\text{H}}_{\text{B}}}\)
2 \(\mathrm{H}_{\mathrm{C}}>\mathrm{H}_{\mathrm{D}}>\mathrm{H}_{\mathrm{B}}>\mathrm{H}_{\mathrm{A}}\)
3 \(\mathrm{H}_{\mathrm{C}}>\mathrm{H}_{\mathrm{A}}>\mathrm{H}_{\mathrm{D}}>\mathrm{H}_{\mathrm{B}}\)
4 \(\mathrm{H}_{\mathrm{D}}>\mathrm{H}_{\mathrm{C}}>\mathrm{H}_{\mathrm{B}}>\mathrm{H}_{\mathrm{A}}\)
JEE - 2023
NEET DIGITAL LIBRARY