General Knowledge · General Studies
निम्नांकित में से कौन सा द्वितीयक प्रदूषक का उदाहरण है?
- 1PAN (पेरोक्सीएसीटिल नाइट्रेट)✓
- 2SO2
- 3प्रकाश रासायनिक धुआं
- 4धुआंसा कण
सही उत्तर देखें
PAN (पेरोक्सीएसीटिल नाइट्रेट)
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