`CH_(3)CH_(2)OH` convert into `CH_(3)CHO` in the presence of

Options

A. `Na_(2)Cr_(2)O_(7) and NaOH`
B. `Na_(2)Cr_(2)O_(7) and dil. H_(2)SO_(4)`
C. `NaOH`
D. Fe in the presence of NaOH

Answer

B

Explanation

`1^(@)` alcohol are converted into aldehyde by reaction with `Na_(2)Cr_(2)O_(7) and H_(2)SO_(4)`.
`underset("Ethyl alcohol")(CH_(3)CH_(2)OH)+[O] overset(Na_(2)Cr_(2)O_(7)+H_(2)SO_(4))rarr underset("Ethanal")(CH_(3)CHO)+H_(2)O`