MCQ
CH3CH2OH can be converted into CH3CHO by ______________.
- ACatalytic hydrogenation.
- BTreatment with LiAlH4.
- CTreatment with pyridinium chlorochromate.
- DTreatment with KMnO4.
✓
Answer
- Treatment with pyridinium chlorochromate.
Explanation:
Alcohols are oxidized to aldehydes and finally to acids.
$\text{CH}_3\text{CH}_2\text{OH}\xrightarrow{[\text{O}]}\text{CH}_3\text{CHO}\xrightarrow{[\text{O}]}\text{CH}_3\text{COOH}$
Oxidations can be stopped at aldehyde stage by using puridinium chlorochromate (CrO3C5H5N.HCl)
$\text{CH}_3\text{CH}_2\text{OH}\xrightarrow{\text{PCC}}\text{CH}_3\text{CHO}$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
The ZnCl used in a dry cell is which helps to maintain the moistness of paste contained in the cell between anode and cathode is:
$[Cu(CN)_4]^{2-}$ is more stable than $[Cu(NH_3)_4]^{2+}$ because :-
→Which of the following statement is not true for glucose?
The vapour pressure of pure liquid $A$ is $0.80\,atm$. On mixing a non-volatile $B$ to $A$, its vapour pressure becomes $0.6\,atm$. The mole fraction of $B$ in the solution is
→Which of the following shows half filled configuration
The order of stability of the following tautomeric compounds is
→$\mathop {\begin{array}{*{20}{c}}
{OH\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||} \\
{C{H_2} = C - C{H_2} - C - C{H_3}}
\end{array}}\limits_{(I)} \rightleftharpoons $
$\mathop {\begin{array}{*{20}{c}}
{OH\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||} \\
{C{H_3} - C - C{H_2} - C - C{H_3}}
\end{array}}\limits_{(II)} \rightleftharpoons $
$\mathop {\begin{array}{*{20}{c}}
{OH\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||} \\
{C{H_3} - C = CH - C - C{H_3}}
\end{array}}\limits_{(III)} $
Acetamide is treated separately with the following reagents. Which would give methyl amine
Which of the following compound will not undergo azo coupling reaction with benzene diazonium chloride.
Which among the following reagent cannot be used for above interconversion?
The product in the reaction (figure) $+HBr$ is
→