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

Explain why is OH group in phenols more strongly held as compared to OH group in alcohols.

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प्रश्न

Explain why is OH group in phenols more strongly held as compared to OH group in alcohols.

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उत्तर

In phenol, oxygen atom is attached to sp2-hybridised carbon atom while in alcohol, it is attached to sp3-hybridised carbon atom. The bond formed between oxygen and sp2-hybridised carbon is more strongly held then that formed between oxygen and sp3-hybridised carbon.

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अध्याय 11: Alcohols, Phenols and Ethers - Multiple Choice Questions (Type - I) [पृष्ठ १६०]

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एनसीईआरटी एक्झांप्लर Chemistry Exemplar [English] Class 12
अध्याय 11 Alcohols, Phenols and Ethers
Multiple Choice Questions (Type - I) | Q 41 | पृष्ठ १६०

संबंधित प्रश्न

Show how will you synthesize pentan-1-ol using a suitable alkyl halide.


Give the equation of the following reaction: 

Dilute HNO3 with phenol.


Give the equation of the following reaction:

Treating phenol with chloroform in the presence of aqueous NaOH.


Name the reagent used in the following reaction: 

Oxidation of a primary alcohol to carboxylic acid.


Lucas reagent is ____________.


In the reduction \[\ce{R - CHO + H2 -> RCH2OH}\] the catalyst used is:


Which of the following are used to convert RCHO into RCH2OH?

(i) H2/Pd

(ii) LiAlH4

(iii) NaBH4

(iv) Reaction with RMgX followed by hydrolysis


The compound which gives the most stable carbonium ion on dehydration is:


Cyclohexene is best prepared from cyclohexanol by which of the following:


Identify the secondary alcohols from the following set:

  1. \[\ce{CH3CH2CH(OH)CH3}\]
  2. \[\ce{(C2H5)3COH}\]



Name the factors responsible for the solubility of alcohols in water.


Suggest a reagent for the following conversion.


Ethers can be prepared by Williamson synthesis in which an alkyl halide is reacted with sodium alkoxide. Di-tert-butyl ether can’t be prepared by this method. Explain.


What happens when (CH3)3 C – OH is heated with Cu/573 K?

Write the chemical equation in support of your answer.


Write the mechanism of acid dehydration of ethanol to yield ethene.


Write the mechanism of acid dehydration of ethanol to yield ethene.


Write the mechanism of acid dehydration of ethanol to yield ethene.


Write the mechanism of acid-catalysed dehydration of ethanol to yield ethene.


Write the mechanism of acid dehydration of ethanol to yield ethene. 


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