wat is action of KMnO₄ and K₂CrO4 on 1^o,2^o and 3^o alcohols???

1⁰ =>carboxylic acid

2⁰=>ketone

3⁰=>no reaction

With KMnO₄ and K₂CrO₄

1⁰ will first get oxidised to aldehyde and then to carboxylic acid

but if PCC is used then rxn stops after formation of aldehyde

2⁰ will first get oxidised to ketone and then to carboxylic acid with

lesser number of carbon atoms as that of starting reactant

However 3⁰ will not get directly oxidised. Firstly it will loose water

and then ozonolysis will occur formining 2 products, Out of which

both will oxidise. One forming Carboxylic acid and other bi products