Which of the following has maximum $- \mathrm{I}$effect?

Important Questions on Organic Chemistry - Some Basic Principles and Techniques

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Gamma Question Bank for Medical Chemistry>Chapter 12 - Organic Chemistry - Some Basic Principles and Techniques>EXERCISE>Q 21

Carbon-carbon bond-order in benzene is $1.5$ due to

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Gamma Question Bank for Medical Chemistry>Chapter 12 - Organic Chemistry - Some Basic Principles and Techniques>EXERCISE>Q 22

Which of the following is the most acidic?

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Gamma Question Bank for Medical Chemistry>Chapter 12 - Organic Chemistry - Some Basic Principles and Techniques>EXERCISE>Q 23

In which of the following, the group attached to the benzene ring shows $+\mathrm{R}$ effect?

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Gamma Question Bank for Medical Chemistry>Chapter 12 - Organic Chemistry - Some Basic Principles and Techniques>EXERCISE>Q 24

Which of the following compound can show resonance?

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Gamma Question Bank for Medical Chemistry>Chapter 12 - Organic Chemistry - Some Basic Principles and Techniques>EXERCISE>Q 25

Which of the following is the most stable carbocation?

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Gamma Question Bank for Medical Chemistry>Chapter 12 - Organic Chemistry - Some Basic Principles and Techniques>EXERCISE>Q 26

Electromeric effect involves the complete transfer of

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Gamma Question Bank for Medical Chemistry>Chapter 12 - Organic Chemistry - Some Basic Principles and Techniques>EXERCISE>Q 27

Which of the following is the most acidic in nature?

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Gamma Question Bank for Medical Chemistry>Chapter 12 - Organic Chemistry - Some Basic Principles and Techniques>EXERCISE>Q 28

The number of $\mathrm{\alpha }$-hydrogen atoms present in  is