Chemistry · Environmental Chemistry
अम्लीय वर्षा (Acid rain) आमतौर पर तब होती है जब वर्षा के जल का pH मान _______ से कम हो जाता है।
- 15.7
- 25.8
- 35.9
- 45.6✓
सही उत्तर देखें
5.6
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