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प्रश्न
Name the reagent used in the following reaction:
Oxidation of a primary alcohol to carboxylic acid.
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उत्तर
Acidified potassium dichromate or neutral, acidic or alkaline KMnO4 is used in the oxidation of primary alcohol to carboxylic acid.
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संबंधित प्रश्न
Write the final product(s) in each of the following reactions:
Give reasons for the following:
o-nitrophenol is more acidic than o-methoxyphenol.
Write the mechanism of the following reaction :
Name the reagent used in the following reaction:
Benzyl alcohol to benzoic acid.
When 3-methylbutan-2-ol is treated with HBr, the following reaction takes place:
\[\begin{array}{cc}
\phantom{...................................}\ce{Br}\\
\phantom{..................................}|\\
\ce{CH3 - CH - CH - CH3 ->[HBr] CH3 - C - CH2 - CH3}\\
|\phantom{.........}|\phantom{...................................}|\phantom{...........}\\
\ce{CH3}\phantom{...}\ce{OH}\phantom{...............................}\ce{CH3}\phantom{.......}\\
\end{array}\]
Give a mechanism for this reaction.
(Hint: The secondary carbocation formed in step II rearranges to a more
stable tertiary carbocation by a hydride ion shift from 3rd carbon atom.)
Lucas test is used for the detection of _____________.
Which one of the following on oxidation gives a ketone?
Primary and secondary alcohols on the action of reduced copper give:
Cyclohexene is best prepared from cyclohexanol by which of the following:
Identify the secondary alcohols from the following set:
- \[\ce{CH3CH2CH(OH)CH3}\]
- \[\ce{(C2H5)3COH}\]
Suggest a reagent for the following conversion.
Explain why is OH group in phenols more strongly held as compared to OH group in alcohols.
In Kolbe’s reaction, instead of phenol, phenoxide ion is treated with carbon dioxide. Why?
Assertion: Bond angle in ethers is slightly less than the tetrahedral angle.
Reason: There is a repulsion between the two bulky (–R) groups.
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.
