Chemistry Aldehydes & Ketones DUHS 2022
PMDC Verified Question 36 of 94
Aldehyde reacts with:
A
Ketones are more easily oxidized
B
It is always difficult to oxidase aldehyde
C
Mild oxidizing agent & strong oxidizing agent both
D
Only strong oxidizing agent
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: Mild oxidizing agent & strong oxidizing agent both
Concept:

The presence of a hydrogen atom attached directly to the carbonyl carbon makes aldehydes uniquely susceptible to oxidation.

Solution:

  • Because of the oxidizable formyl hydrogen, aldehydes can be easily converted into carboxylic acids.


  • They react readily with mild oxidizing agents (such as Tollens', Fehling's, and Benedict's reagents).


  • Naturally, they will also react rapidly with strong oxidizing agents (such as acidified \( KMnO_4 \) or \( K_2Cr_2O_7 \)).


  • Therefore, aldehydes react with both mild and strong oxidizing agents.


Why other options are incorrect:

Option A is factually inverted (ketones are harder to oxidize). Option B is false. Option D ignores the fact that mild agents also successfully oxidize aldehydes.

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