What is the molecular formula of methanol?

Esters are sweet-smelling substances and are used in making perfumes. Suggest an activity and the reaction involved for the preparation of an ester with a well-labeled diagram.

State reasons to explain why covalent compounds:
$(i)$ are bad conductors of electricity?
$(ii)$ have low melting and boiling points?

Write any three physical properties and three uses of ethanol.

What is the solution of ethanol containing $5\%$ water called?

In the presence of which enzyme does the fermentation of glucose or fructose occur to produce ethanol and carbon dioxide?