In Carius method for estimation of halogens, 180 mg of an organic compound produced 143.5 mg of AgCl . The percentage composition of chlorine in the compound is _________ %. (Given : molar mass in $\mathrm{g} \mathrm{~mol}^{-1}$ of $\mathrm{Ag}: 108, \mathrm{Cl}: 35.5$ )

How many compounds among the following compounds show inductive, mesomeric as well as hyperconjugation effects?

Total number of aromatic compounds among the following compounds is ______.

The number of optically active compounds from the following is _________.