$CaO$

$Na_2O$

$SiO_2$

$Mg(OH)_2$

Aqueous solution

In presence of water

Non-aqueous solution

None of these

Bronsted acids

Bronsted bases

Lewis acids

Lewis bases

${{\rm{N}}_2}{{\rm{H}}_4}$

${\rm{NH}}_4^ +$

${\rm{N}}{{\rm{H}}_2}{\rm{OH}}$

${\rm{N}}{{\rm{H}}_3}$

Strength

Capacity

Buffer effect

Levelling effect

${\rm{CC}}{{\rm{l}}_4}$

${{\rm{C}}_6}{{\rm{H}}_6}$

${\rm{S}}{{\rm{O}}_2}$

All of these

Weak electrolyte

Strong electrolyte

Both weak and strong electrolyte

Non-electrolyte

${\rm{HCl}}{{\rm{O}}_4}$

${\rm{HBr}}{{\rm{O}}_4}$

${\rm{HI}}{{\rm{O}}_4}$

${\rm{HN}}{{\rm{O}}_3}$

${\rm{HCl}}$

${\rm{HCl}}{{\rm{O}}_4}$

${{\rm{H}}_3}{\rm{P}}{{\rm{O}}_4}$

${\rm{HN}}{{\rm{O}}_3}$

Electron

Electron pair

Proton

Neutron

Lewis base

Lewis acid

Bronsted acid

Arrhenius acid