Which from following compounds is obtained when acetamide is warmed with bromine and excess conc. $\mathrm{KOH}_{(\mathrm{aq})}$ solution?

What is the total number of moles of ' C ' atoms and ' H ' atoms respectively present in following n mole molecule?

Which of the following relations about $\mathrm{E}_{\text {cell }}^{\circ}$ is false?