Question
All alkalies are bases but all bases are not alkalies. Justify this statement.
Answer
Alkalies are the bases which dissolves in water. But all bases cannot dissolve in water. Hence, all alkalies are bases but all bases are not alkalies.
For example- sodium hydroxide is a base, soluble in water and term as an alkali. while aluminium hydroxide is insoluble in water and term as a base not as an alkali.