GIVE TWO EXAMPLES EACH OF AN INSOLUBLE BASE AND A SOLUBLEBASE?
Copper (II) Hydroxide [Cu(OH)2] and Calcium hydroxide [Ca(OH)2] are bases which are insoluble in water.
Bases like sodium hydroxide (NaOH), potassium hydroxide (KOH), barium hydroxide [Ba(OH)2] are soluble in water. Hence, these are known as alkalis.