Biotechnology is applied in the following processes except

The percentage by mass of water in Na\(_2\)CO\(_3\).10H\(_2\)O is  [ Na\(_2\)CO\(_3\).10H\(_2\)O = 286, H\(_2\)O = 18 ]

Which of the following conditions are necessary for the preparation of alkanoates from alkanols and alkanoic acids?

All the following compounds are covalent except

A salt that could be prepared by double decomposition is