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Why is acid rain considered more harmful than normal rain?

Answer and explanation

Correct answer: Its pH is very low

The governing concept is the pH scale: a lower pH indicates a higher concentration of hydrogen ions and therefore greater acidity. Acid rain forms when pollutants such as sulphur and nitrogen oxides produce acids in atmospheric moisture, making its pH lower than ordinary rain. Hence option A is correct. A pH of 14 is strongly basic, and acid rain is not always basic or free from dissolved substances.

Related tags

ScienceClass10Acid-RainPhAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And Behaviour

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