Adding water to acid.

Adding acid to water.

Mix acid and water simultaneously.

Adding water to acid in a shallow container

an acid and a base.

an acid and a salt.

a salt and water.

a salt and a base.

Yellow in both acid and base.

Yellow in acid and red in base.

Pink in acid and yellow in base.

Red in acid and blue in base.

blue and red.

red and blue.

pink and colourless.

colourless and pink

Organic matter

Slaked lime

Quick lime

Calamine solution

China rose (Gudhal)

Beetroot

Lichen

Blue berries (Jamun)

physical and reversible change.

chemical change that cannot be reversed.

chemical and reversible change.

chemical change that cannot be reversed.

Acidic

Basic

Neutral

Either acidic or neutral

Grapes, lime water

Vinegar, milk of magnesia

Curd, milk of magnesia

Curd, vinegar