2022 · Q27
Which one of the following is the main reason of acid rains?
General KnowledgeChemistry
- ADissolution of sulphur and nitrogen oxides in rain
- BDissolution of minerals in rain
- CDissolution of dust particles in rain
- DDissolution of soil solution in rain
Explanation
Acid rain is caused chiefly by sulphur dioxide and nitrogen oxides from burning fossil fuels; dissolved in rainwater they form sulphuric and nitric acids (pH below 5.6). Dissolved minerals, dust or soil solutions do not acidify rain.