Question

Which one of the following is correct?

• A. RCH\(_2\)OH + KMnO\(_4\) \( \rightarrow \) No reaction
• B. CH\(_3\)CH\(_2\)OH + Na\(_2\)Cr\(_2\)O\(_7\), H\(_2\)SO\(_4\) \( \rightarrow \) No reaction
• C. CH\(_3\)CHO + Na\(_2\)Cr\(_2\)O\(_7\), H\(_2\)SO\(_4\) \( \rightarrow \) No reaction
• D. CH\(_3\)CHO + alkaline KMnO\(_4\) \( \rightarrow \) No reaction

Hint:

Aldehydes typically undergo oxidation in acidic conditions, but they do not react with alkaline KMnO\(_4\).

Answer 1

The Correct Option is D

Step 1: Understand the reactions. Alkaline KMnO\(_4\) does not oxidize aldehydes like CH\(_3\)CHO under normal conditions. It only oxidizes aldehydes in acidic conditions.
Step 2: Conclusion. Thus, CH\(_3\)CHO does not react with alkaline KMnO\(_4\).