Write true or false for the following statements:

The universal indicator shows same colour at different concentrations of hydrogen ions in a solution.

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Care must be taken while mixing concentrated nitric acid or sulphuric acid with water. The water must always be added slowly to the acid with constant stirring.

Write true or false for the following statements:

Mixing an acid or base with water results in increase in the concentration of ions (H₃O⁺/OH^–) per unit volume.

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On the pH scale, we can measure pH from 0 (very acidic) to 14 (very alkaline).

Write true or false for the following statements:

Higher is the hydronium ion concentration, higher is the pH value.