Which of the following cause alkalinity in natural water?
All of the above
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Correct option is D)
Alkaline nature in water is developed due to the presence of impurities such as sodium carbonate, potassium bi carbonate or potassium carbonate. In India, the nature of rainwater is observed alkaline. The alkaline nature of water is due to the buffering of acidity by soil-derived aerosols which are rich in Ca.