SSC MTS EXAM

Detailed explanation-1: -pH is really a measure of the relative amount of free hydrogen and hydroxyl ions in the water. Water that has more free hydrogen ions is acidic, whereas water that has more free hydroxyl ions is basic. Since pH can be affected by chemicals in the water, pH is an important indicator of water that is changing chemically.

Detailed explanation-2: -Hydrogen Ion Concentration (pH) A pH of 7 is neutral. A decrease in pH below 7 shows an increase in acidity (hydrogen ions), while an increase in pH above 7 shows an increase in alkalinity (hydroxyl ions).

Detailed explanation-3: -pH is a measure of the hydrogen ion concentration in an aqueous solution.