1.

Identify the (X) in the following reaction : H_(2)C= underset(CH_(3))underset(|)C- CH_(2)OH overset(X)to H_(2)C= underset(CH_(3))underset(|)C-CHO

Answer»

`CrO_(3)//H_(2)SO_(4)`
`PC C//CH_(2)Cl_(2)`
`Na_(2)Cr_(2)O_(7)//H_(2)SO_(4)`
`KMnO_(4)//H_(2)SO_(4)`

Solution :`PC C//CH_(2)Cl_(2)`


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