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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

Out of o-nitrophenol and o-cresol which is more acidic?

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प्रश्न

Out of o-nitrophenol and o-cresol which is more acidic?

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उत्तर

There is an electron-withdrawing group NO2 that is present in the ortho position in ortho-nitrophenol which enhances the acidic strength and makes more acidic. In o-cresol there is an electron releasing group, they decrease acidic strength.

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अध्याय 11: Alcohols, Phenols and Ethers - Multiple Choice Questions (Type - I) [पृष्ठ १५९]

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एनसीईआरटी एक्झांप्लर Chemistry Exemplar [English] Class 12
अध्याय 11 Alcohols, Phenols and Ethers
Multiple Choice Questions (Type - I) | Q 32 | पृष्ठ १५९

संबंधित प्रश्न

Write the equation involved in the acetylation of Salicylic acid.


Give two reactions that show the acidic nature of phenol.


Explain how does the −OH group attached to a carbon of benzene ring activate it towards electrophilic substitution?


Account for the following:
o-nitrophenol is more steam volatile than p-nitrophenol.


The ionization constant of phenol is higher than that of ethanol because ____________.


In CH3CH2OH, the bond that undergoes heterolytical change most readily is ____________.


Phenol reacts with Br2 in CS2 at low temperature to give ____________.


Strength of acidity is in order:


Which one of the following compounds has the most acid nature?


Assertion: o-Nitrophenol is less soluble in water than the m- and p-isomers.

Reason: m- and p- Nitrophenols exist as associated molecules.


Phenol is used in the manufacture of


Arrange the following in the increasing order of their property indicated:

4-Nitrobenzoic acid, benzoic acid, 3,4-Dinitrobenzoic acid, 4-Methoxy benzoic acid (Acid strength)


Which is the final product ‘A’ (major) in the given reaction?


In the following compounds:

(I) (II) (III) (IV)

The order to acidity is ______.


Which one of the following has the lowest pKa value?


Give the structure of the product you would expect when the following alcohol reacts with HBr.

Butan-1-ol


Give the structure of the product you would expect when the following alcohol reacts with SOCl2.

2-Methylbutan-2-ol


Compare acidity of phenol with that of ethanol.


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