Chemistry · Chemical Reactions
लोहे में जंग लगने की प्रक्रिया के लिए, ______ दोनों की उपस्थिति अनिवार्य है।
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- 1ऑक्सीजन और नाइट्रोजन
- 2हाइड्रोजन और जल
- 3नाइट्रोजन और जल
- 4ऑक्सीजन और जल✓
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ऑक्सीजन और जल
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