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Formic acid is a stronger acid than acetic acid. This can be explained using

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Important Questions on Organic Chemistry- Some Basic Principles and Techniques

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Chemistry>Organic Chemistry>Organic Chemistry- Some Basic Principles and Techniques>Application of Electronic Effect
The compound that does NOT liberate CO2, on treatment with aqueous sodium bicarbonate solution, is 
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Chemistry>Organic Chemistry>Organic Chemistry- Some Basic Principles and Techniques>Application of Electronic Effect
The correct order of acidity for the following compounds is :
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Chemistry>Organic Chemistry>Organic Chemistry- Some Basic Principles and Techniques>Application of Electronic Effect
The weakest among the following acids is
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Chemistry>Organic Chemistry>Organic Chemistry- Some Basic Principles and Techniques>Application of Electronic Effect
The correct increasing order of the basic strength for the following compounds is:

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Chemistry>Organic Chemistry>Organic Chemistry- Some Basic Principles and Techniques>Application of Electronic Effect
The correct order for acid strength of compounds CH≡CH, CH3-C≡CH and CH2=CH2 is as follows:
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Chemistry>Organic Chemistry>Organic Chemistry- Some Basic Principles and Techniques>Application of Electronic Effect
Among formic acid, acetic acid, propanoic acid and phenol, the strongest acid in water is
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Chemistry>Organic Chemistry>Organic Chemistry- Some Basic Principles and Techniques>Application of Electronic Effect
The correct order of acidity of the following compounds is

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Chemistry>Organic Chemistry>Organic Chemistry- Some Basic Principles and Techniques>Application of Electronic Effect
The N which contribute least to the basicity of the compound is :
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Chemistry>Organic Chemistry>Organic Chemistry- Some Basic Principles and Techniques>Application of Electronic Effect
The correct statement regarding the basicity of aryl amines is:
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Chemistry>Organic Chemistry>Organic Chemistry- Some Basic Principles and Techniques>Application of Electronic Effect
The correct order of strengths of carboxylic acids is

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Chemistry>Organic Chemistry>Organic Chemistry- Some Basic Principles and Techniques>Application of Electronic Effect
Considering the basic strength of amines in an aqueous solution, which one has the smallest pKb value?
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Chemistry>Organic Chemistry>Organic Chemistry- Some Basic Principles and Techniques>Application of Electronic Effect

The increasing basicity order of the following compounds is:

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Chemistry>Organic Chemistry>Organic Chemistry- Some Basic Principles and Techniques>Application of Electronic Effect
Among the following oxoacids, the correct decreasing order of acid strength is :
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Chemistry>Organic Chemistry>Organic Chemistry- Some Basic Principles and Techniques>Application of Electronic Effect
The acidity of compounds I-IV in water

I . Ethanol II . Acetic Acid III . Phenol IV . Acetonitrile

follows the order
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Chemistry>Organic Chemistry>Organic Chemistry- Some Basic Principles and Techniques>Application of Electronic Effect
The increasing order of basicity of the following compounds is : 
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Chemistry>Organic Chemistry>Organic Chemistry- Some Basic Principles and Techniques>Application of Electronic Effect
The increasing order of the pKb  of the following compund is:
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Chemistry>Organic Chemistry>Organic Chemistry- Some Basic Principles and Techniques>Application of Electronic Effect

What is the order of basicity among the following compounds?

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Chemistry>Organic Chemistry>Organic Chemistry- Some Basic Principles and Techniques>Application of Electronic Effect
In case of substituted aniline the group which decreases the basic strength is
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Chemistry>Organic Chemistry>Organic Chemistry- Some Basic Principles and Techniques>Application of Electronic Effect
Among the following, which is least acidic?
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Chemistry>Organic Chemistry>Organic Chemistry- Some Basic Principles and Techniques>Application of Electronic Effect
The correct order of basicity is