How did ethanoic acid get its name as glacial acetic acid?

Which of the following compounds has a sweet,fruity smell?

$(a)$ Write chemical equations for the reactions of ethanoic acid with:
$(i)$ Sodium
$(ii)$ Sodium carbonate
$(iii)$ Ethanol in the presence of conc. $H_{2}SO_{4}$.
$(b)$ State the role of concentrated sulphuric acid in the esterification reaction.
$(c)$ Write one use of ethanoic acid.

Name the functional group present in the following compounds:
$(i)$ $CH_{3}-CH_{2}-CH_{2}-COOH$
$(ii)$ $CH_{3}-CO-CH_{2}-CH_{3}$

What is the percentage of sulfur used in vulcanized rubber for battery casings (in $\%$)?

An organic compound $'A'$ has a molecular formula $C_{2}H_{6}O$. $'A'$ on oxidation gives compound $'B'$,which produces effervescence with baking soda.
$(i)$ Identify $'A'$ and $'B'$.
$(ii)$ Write the chemical reaction of $'B'$ with baking soda.