Teaching BPSC बिहार मध्य विद्यालय (6 to 8) शिक्षक भर्ती 4.0 Mock Test General Knowledge Geography (World Geography) Geomorphology
Which minerals are mainly found in the Sial layer of the earth's crust?
1
Silica and Magnesium
2
Silica and Iron
3
Silica and Aluminium
4
More than one of the above
5
None of the above