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The most suitable reagent for the conversion of R–CH2OH → R–CHO is-

1. K2Cr2O7
2. CrO3
3. PCC (Pyridinium Chlorochromate)
4. KMnO4

Correct answer: PCC (Pyridinium Chlorochromate)

Solution

PCC is a mild oxidizing agent that selectively oxidizes primary alcohols to aldehydes without further oxidizing them to carboxylic acids, making it the most suitable choice for this conversion.

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