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

Suggest a reagent for the following conversion. - Chemistry

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प्रश्न

Suggest a reagent for the following conversion.

टीपा लिहा
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उत्तर

Pyridinium chlorochromate (PCC), a complex of chromium trioxide with pyridine and HCl.

\[\ce{CH3 - CH = CH - CH2OH ->[PCC] CH3 - CH = CH - CHO}\]

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

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एनसीईआरटी एक्झांप्लर Chemistry [English] Class 12
पाठ 11 Alcohols, Phenols and Ethers
Multiple Choice Questions (Type - I) | Q 27 | पृष्ठ १५९

संबंधित प्रश्‍न

Give reasons for the following:

o-nitrophenol is more acidic than o-methoxyphenol.


Ortho and para nitrophenols are more acidic than phenol. Draw the resonance structures of the corresponding phenoxide ions.


Give the equation of the following reaction:

Oxidation of propan-1-ol with alkaline KMnO4 solution.


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


Name the reagent used in the following reaction:

Oxidation of a primary alcohol to carboxylic acid.


Name the reagent used in the following reaction:

Benzyl alcohol to benzoic acid.


Lucas reagent is ____________.


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


By which of the following methods alcohol can be prepared in excellent yield?


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


Lucas test is done to differentiate between ____________.


During dehydration of alcohols to alkenes by heating with cone. H2SO4 the initial step is ____________.


\[\ce{CH3CH2OH}\] can be converted into \[\ce{CH3CHO}\] by ______.


Identify the secondary alcohols from the following set:

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



Mark the correct increasing order of reactivity of the following compounds with HBr/HCl.

(a)
(b)
(c)

Write the mechanism of acid-catalysed 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.


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