Ethanol reacts with sodium and forms two products. These are:

Unsaturated hydrocarbons contain multiple bonds between two $C$ atoms and show addition reactions. Give the test to distinguish ethane from ethene.

Write the number of covalent bonds in the molecule of ethane.

Which compound has the molecular formula $CH_{3}CHO$?

What is produced when ethanol reacts with sodium metal?

The structural formula of an ester is shown in the image. Write the structural formula of the acid and the alcohol from which it might be prepared. Name the process of formation of ester.