Write the number of covalent bonds in the molecule of ethane.

List three physical properties of covalent compounds and give reason for each.

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

What is the difference between two consecutive members in a homologous series of alkanes in terms of:
$(i)$ molecular mass.
$(ii)$ number of atoms of elements.

Will micelle formation take place when soap is dissolved in an organic solvent?

Which compound has the molecular formula $CH_{3}CHO$?