Identify the functional group present in Pentanone.

State the meaning of functional group in a carbon compound. Write the functional group present in $(i)$ ethanol and $(ii)$ ethanoic acid and also draw their structures.

Which of the following monomers is used in the synthesis of polythene?

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.

What is the molecular formula of formic acid (methanoic acid)?

Give names of the following:
$(a)$ An alcohol containing $4$ carbon atoms.
$(b)$ An acid with $5$ carbon atoms.
$(c)$ Simplest ketone. Define functional group in a carbon compound. Mention names of any three functional groups with their formulae and example.