An organic compound gives hydrogen on reacting with sodium metal. It also gives iodoform test and forms an aldehyde of molecular formula `C_(2)H_(4)O` on oxidation with acidified dichromate. Name the compound and give the equation of these reactions.

Explanation

Ethanol `(CH_(3)CH_(2)OH)` is the organic compound that gives hydrogen on reacting with sodium metal. It gives positive iodoform test and forms an aldehyde `(C_(2)H_(4)O)` with acidified dichromate.
The reaction are as follows
`2CH_(3)CH_(2)OH +2Na to 2CH_(3) -CH_(2)-overset(-)ONa^(+)+H_(2)`
`CH_(3)CH_(2)OH+4I_(2)+6NaOH overset(Delta)to CH_(3)+HCOoverset(-)ONoverset(+)a+5H_(2)O+5NaI`
`CH_(3)CH_(2)OH underset(KMnO_(4))overset("Acidified")to CH_(3)CHO`