Nomenclature of carboxylic acids

Give the IUPAC name.

• 2-methyl -1 -pentanol

• 2,3-dimethylbutanoic acid

• 2-butano-3-lbutanoic acid

• 3-pentanol

Why there is no need to show the position of carboxylic acid while writing IUPAC names?

Tell the name of this compound?

• Ethanoic acid

• Propanoic acid

• Butanoic acid

• Methanoic acid

Write structural formula of methyl metanoate.

Give the IUPAC name.