What is the IUPAC name of

(i) CH₃ – CH₂ – CH = CH₂

(ii) CH₃CHO?

Explain why carbon generally forms compounds by covalent bonds.

Select alkene and alkyne from the following:

C₆H₁₂, C₃H₄, C₂H₄, CH₄, C₄H₈, C₅H₈

Write the IUPAC name of

(i) CH₃COCH₂CH₃

Which property of ethanol makes it suitable for preparing medicines such as tincture of iodine, cough syrups and other tonics?