Which of the following is a homopolymer?

$C_{3}H_{6}$,$C_{4}H_{8}$,and $C_{5}H_{10}$ belong to the same homologous series.
$(i)$ Define homologous series.
$(ii)$ Why are the melting and boiling points of $C_{5}H_{10}$ higher than $C_{4}H_{8}$?
$(iii)$ Arrange these hydrocarbons in order of increasing boiling points.

Chlorine reacts with saturated hydrocarbons at room temperature in the :

Which gas is produced during the process of fermentation that causes effervescence?

State whether the following statement is true or false:
Carbon, in its all allotropic forms, burns in oxygen to give nitrogen dioxide along with the release of heat and light.

Look at the figure and answer the following questions:
$(a)$ If ethanol is used instead of ethanoic acid,would you expect the same change?
$(b)$ How can a solution of lime water be prepared in the laboratory?