JEE Main 2014 · 6 Apr · Shift 1 · Chemistry Q53

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ChemistrySingle correct+4 / -1Question 53 of 90

The most suitable reagent for the conversion of $\ce{R-CH2-OH -> R-CHO}$ is :

\ce{KMnO4}

\ce{K2Cr2O7}

\ce{CrO3}

PCC (Pyridinium Chlorochromate)

Answer and worked solution

Official answer: D

PCC oxidises primary alcohols to aldehydes and stops there. $\ce{KMnO4}$ , $\ce{K2Cr2O7}$ and $\ce{CrO3}$ in acid carry the oxidation on to the carboxylic acid.

Topics:Alcohols Oxidation and reduction

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JEE Main 2014 · 6 Apr · Shift 1, Chemistry question 53