A) \[KMn{{O}_{4}}\]
B) \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\]
C) \[Cr{{O}_{3}}\]
D) PCC (Pyridine chloro chromate)
Correct Answer: D
Solution :
The alcohol can be converted to aldehyde group by treating with oxidising agent Pyridinium chloro chromate \[({{C}_{6}}{{H}_{5}}\overset{\oplus }{\mathop{N}}\,HCr{{O}_{3}}C{{l}^{-}})\] it is abbreviated as PCC and is called Collin's reagent. This reagent is used in non aqueous solvent like \[C{{H}_{2}}C{{l}_{2}}\] It is a very good reagent because it checks the further oxidation of aldehyde to carboxylic acid while rest oxidising agent oxidise aldehyde into carboxylic acid.
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