Which of the following is not a straight chain hydrocarbon?

State whether the following statement is true or false:
Animal fats generally contain saturated fatty acids,which are said to be good for health.

Identify the compounds $A$ to $E$ in the following reaction sequence:
$(i)$ $CH_3CH_2OH \xrightarrow[dil. HCl]{KMnO_4/KOH} (A) + H_2O$
$(ii)$ $CH_3CH_2OH + A \xrightarrow[\Delta]{Conc. H_2SO_4} B + H_2O$
$(iii)$ $B + NaOH \rightarrow C + CH_3CH_2OH$
$(iv)$ $A + NaHCO_3 \rightarrow C + D + H_2O$
$(v)$ $CH_3CH_2OH + E \rightarrow CH_3CH_2ONa + H_2$

State the two properties of carbon which make it unique among other elements. State the two uses of carbon which are based on its unique property.

What is the boiling point of propanone (in $;K$)?

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