General Knowledge · General Studies
लौहे में जंग लगने के लिए वायु के किन दो घटक आवश्यक हैं?
- 1पोटाशियम और मैग्नेट
- 2गर्मी
- 3ऑक्सीकरण
- 4ऑक्सीजन और नमी✓
सही उत्तर देखें
ऑक्सीजन और नमी
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