Teaching UGC NET Mock Test Series 2025 (Paper 1 & 2) Environmental Science Environmental Geosciences Geology
Which among the following is the correct sequence of the elements in earth's crust in decreasing order?
1
Oxygen > Aluminium > Silicon > Iron
2
Oxygen > Silicon > Iron > Aluminium
3
Oxygen > Aluminium > Iron > Silicon
4
Oxygen > Silicon > Aluminium > Iron