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Which of the following phenol has lowest pKa?

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Important Questions on Organic Chemistry- Some Basic Principles and Techniques

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Alpha Question Bank for Engineering: Chemistry>Chapter 23 - Organic Chemistry- Some Basic Principles and Techniques>Exercise-4>Q 133
Which is most basic among the followings?
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Alpha Question Bank for Engineering: Chemistry>Chapter 23 - Organic Chemistry- Some Basic Principles and Techniques>Exercise-4>Q 135

What is the order of stability of the following tautomers ?

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Alpha Question Bank for Engineering: Chemistry>Chapter 23 - Organic Chemistry- Some Basic Principles and Techniques>Exercise-4>Q 136
The feasible reaction is:
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Alpha Question Bank for Engineering: Chemistry>Chapter 23 - Organic Chemistry- Some Basic Principles and Techniques>Exercise-4>Q 137
In which of the following carbocation rearrangement takes place with change in carbon skeleton:
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Alpha Question Bank for Engineering: Chemistry>Chapter 23 - Organic Chemistry- Some Basic Principles and Techniques>Exercise-4>Q 138

Observe the following reaction sequence.

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Which is correct acidic strength order:

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Alpha Question Bank for Engineering: Chemistry>Chapter 23 - Organic Chemistry- Some Basic Principles and Techniques>Exercise-4>Q 139
Identify the most stable carbocation among the following:
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Alpha Question Bank for Engineering: Chemistry>Chapter 23 - Organic Chemistry- Some Basic Principles and Techniques>Exercise-4>Q 140
Select the most basic compound.
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Alpha Question Bank for Engineering: Chemistry>Chapter 23 - Organic Chemistry- Some Basic Principles and Techniques>Exercise-4>Q 141
Among the following compounds having highest enol content.