What is the total number of particles present in bcc unit cell?

Which among the following polymers is obtained by ring opening polymerization process?

Identify an example of solution that consists of solid as solute and liquid as solvent.

Which of the following compounds is obtained when cyclohexene is oxidized using $\mathrm{KMnO}_4$ in dilute $\mathrm{H}_2 \mathrm{SO}_4$ ?