Q

________ is the most abundant metal on the earth.

RRB Group D, 22-Sep-18 S-1 2018
✓ Answer: B Aluminum
Aluminum is the most abundant metal in Earth's crust. It is highly reactive and doesn't occur in its pure form naturally. Ranking third after oxygen and silicon, it is primarily extracted from bauxite ore (Al2O3.nH2O). This ore contains 30% to 70% aluminum oxide.