Science · Chemistry
माणिक्य (Ruby) और नीलम (Sapphire) रासायनिक रूप से किसके खनिज रूप माने जाते हैं?
- 1एल्युमिनियम ऑक्साइड✓
- 2सिलिकॉन डाइऑक्साइड
- 3लेड ऑक्साइड
- 4टाइटेनियम डाइऑक्साइड
सही उत्तर देखें
एल्युमिनियम ऑक्साइड
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