Write the name and structure of an alcohol with three carbon atoms in its molecule.

Complete the following chemical reactions and write the chemical name of the products obtained.
$(i)$ $CH_{2}=CH_{2} + H_{2}O \longrightarrow$
$(ii)$ $CH_{3}COOH + NaOH \longrightarrow$
$(iii)$ $CH_{3}CH_{2}OH \xrightarrow{H_{2}SO_{4}} $
$(iv)$ $HCOOH + Na \longrightarrow$
$(v)$ $C_{2}H_{5}OH \xrightarrow{\text{Alk. } KMnO_{4}} $

The high temperature resistance property of $Neoprene$ is due to the presence of a large number of which atom?

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

Explain the given reactions with examples:
$(a)$ Saponification reaction
$(b)$ Combustion reaction

Vinegar is a solution of :