Social & Preventive Medicine What is Saturation index? A Used to assess the Air quality by measuring concentration of pollutants. B Used to assess the water quality by estimating hardness, total dissolved solids, alkalinity and pH. C Used to assess the Soil quality that whether it is good for growing crops. D Used to assess the Milk quality by estimating the bacterial count in it. 💡 Explanation What is Saturation index? ✓ Correct Answer: B. Used to assess the water quality by estimating hardness, total dissolved solids, alkalinity and pH.