The gemstone Ruby mainly contains _____ with some impurities.
Gemstone Ruby – This question was asked in:Tehsildar Paper II 2020 (Evening) A. Sodium carbonateB. Copper oxideC. Aluminium oxideD. Magnesium oxide Answer Option C: Aluminium oxide (Al2O3) View all Revenue Dept Past Papers Detailed Solution – Gemstone Ruby The gemstone Ruby mainly contains Aluminium oxide (Al2O3) with some impurities. MOST READ MCQs Which option is … Read more