1.

Mark the incorrect statement (s).

Answer»

Potassium dichromateoxidises a secondaryalcoholinto a ketone .
Potassium permangante is a weaker oxidisingagent than potassiumdichromate.
Potassiumdichromateoxidises a secondary alcohol intoaldehyde.
Alkaline `KMnO_(4)` SOLUTION oxidises tertiaryalcohol to a mixture of a ketoneand an acid.

Solution :In acidie medium , ` KMnO_(4)`gives 5 oxygenwhileacidic ` K_(2)Cr_(2)O_(7) ` gives 3 oxygen. `K_(2)Cr_(2)O_(7)`oxidisessecondaryalcohols to KETONES.
Tertiary alcohols are resistanceto oxidation in NEUTRAL or alkaline`KMnO_(4)`solutionbut are readilyoxidisedin acidic solution ` (KMnO_(4)//H_(2)SO_(4))` to a mixtureof a ketoneand an acid eachcontaininglessernumber of carbonatomsthan theoriginalalcohol.


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