Computer · Environmental Engineering
निम्नलिखित में से कौन सा द्वितीयक वायु प्रदूषक (secondary air pollutant) नहीं है?
- 1नाइट्रोजन ऑक्साइड✓
- 2ओज़ोन
- 3फॉर्मलाडेहाइड
- 4सल्फ्यूरिक अम्ल
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नाइट्रोजन ऑक्साइड
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