Chemistry · Non-metals
निम्न में से कौन सी गैस चाँदी की सतह को काला कर देती है?
- 1ओजोन✓
- 2कार्बन डाइऑक्साइड
- 3ऑक्सीजन
- 4हाइड्रोजन
सही उत्तर देखें
ओजोन
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