Which of following pairs is an example of isoelectronic species?

Which from following compounds is obtained when anisole is heated with dilute sulfuric acid?

Calculate molality of solution of a nonvolatile solute having boiling point elevation $$1.89 \mathrm{~K}$$ if boiling point elevation constant of solvent is $$3.15 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}$$.

What type of following phenomena does the Cannizzaro reaction exhibit?