Alkynes may be represented by the general formula:

$(i)$ How will you bring about the following reactions? Write the concerned chemical equations:
$(a)$ Ethanol to Ethene.
$(b)$ Ethanol to Ethanoic acid.

The general formula of three compounds $A, B$ and $C$ is $C_{n}H_{2n}$. $B$ has the highest boiling point and $C$ has the lowest boiling point.
$(i)$ Mention the type of compound $A, B$ and $C$.
$(ii)$ Which of these has the minimum number of carbon atoms?
$(iii)$ Name the homologous series to which $A, B$ and $C$ belong.

What is used to preserve the dead bodies of animals?

Name the functional group of the following compounds:
$(i) \ R-COOH$
$(ii) \ R-COOR'$
$(iii) \ R-OH$
$(iv) \ R-X$

Carbon,a Group $14$ element in the Periodic Table,is known to form compounds with many elements. Write an example of a compound formed with:
$(a)$ Chlorine (Group $17$ of Periodic Table)
$(b)$ Oxygen (Group $16$ of Periodic Table)