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Some Basic Concepts of Organic Chemistry question

2008 · Q120
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Some Basic Concepts of Organic Chemistry question

2008 · Q120

NEETChemistrySome Basic Concepts of Organic ChemistryMCQ+4 / −1
Which one of the following is most reactive towards electrophilic attack?
  1. A
    AIPMT 2008 Chemistry - Some Basic Concepts of Organic Chemistry Question 68 English Option 1
  2. B
    AIPMT 2008 Chemistry - Some Basic Concepts of Organic Chemistry Question 68 English Option 2
  3. C
    AIPMT 2008 Chemistry - Some Basic Concepts of Organic Chemistry Question 68 English Option 3
  4. D
    AIPMT 2008 Chemistry - Some Basic Concepts of Organic Chemistry Question 68 English Option 4
View written solutionFree

Correct answer: A

Groups like, –Cl and –NO2 shows –I effect. –I groups attached to the benzene ring decrease the electron density in the benzene ring and hence less reactive towards electrophilic attack.

On the other hand, –OH not only shows –I effect but also +M effect which predominates the –I character and electron density is increased in the benzene ring which facilitates electrophilic attack.

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