Question

Bases insoluble in water are called 'alkalis'.

• A. True
• B. False

Answer 1

The correct option is B False

Alkali is a basic, ionic salt of an alkali metal or alkaline earth metal chemical element.

$\to$ Base that dissolves in water.

$\to pH>7.0$

$\to$ They, turn phenolphthalein from colourless to pink

$\to$ Alkalis are subject of bases.

$\to$ Alkalis are soluble in water and forms hydroxide ions or solution of a base in water.

For example:$\underset{Causticsoda}{\underset{}{NaOH}},\underset{Potash}{\underset{}{KOH}},\underset{Limewater}{\underset{}{Ca(OH{)}_2}}$