The process of breaking of a solid ionic compound into its constituent ions is called dissociation.

From the given options soft drink is the most acidic substance.

For a substance to behave as an electrolyte it should produce ions when dissolved in water.

Acetic acid can be classified as weak acid.

Washing soda solution is the most basic solution from the given options.

Phenolphthalein indicator remains colourless in the acidic medium.

If litmus paper is dipped in a solution of sodium hydroxide it will turn blue.

The acidity of soil can be controlled by the addition of CaO.

Sodium hydroxide is an alkali.

If few drops of phenolphthalein indicator are added to lemon juice, then it will show no colour.

Lemon juice is the most acidic of all.

If tomato juice is added in a beaker containing methyl orange indicator, it will show yellow colour.

In calcium hydroxide solution (Ca(OH)₂), phenolphthalein indicator will give a pink colour.

If the pH of a solution is zero then the solution is highly acidic.

If the pH value of solution is 7, then the nature of the solution will be neutral.

Citric acid is present in lemon juice.

KOH can be classified as strong base.

An acidic solution contains a high concentration of H⁺ ions.