railway RRB Technician Grade 3 Mock Test 2024 General Science Chemistry

खालीलपैकी कोणते मूलद्रव्य इका-बोरॉन म्हणून ओळखले जातात?

1
सिलिकॉन
2
गॅलियम
3
ॲल्युमिनियम
4
स्कँडियम
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