define alkalise Share with your friends Share 0 Medha Sethi answered this an alkali is a base which is soluble in water.for example-NaOH , KOH 1 View Full Answer Nitish Kalher answered this souluble bases are called alkalis 0 Utkarsh Singh answered this Bases soluble in water are termed as alkalis.All metal oxides and hydroxides fall in this categoryHope this helps!! 0 Roshini P answered this IT IS A BASE SOLUBLE IN WATER 0 Unknown . . answered this soluble base or a solution of a base are called alkali 0