Teaching BPSC बिहार मध्य विद्यालय (6 to 8) शिक्षक भर्ती 4.0 Mock Test General Knowledge Geography (World Geography) Oceanography
Which mineral salt is dissolved in a major amount in ocean water?
1
Calcium chloride
2
Calcium carbonate
3
Sodium chloride
4
More than one of the above
5
None of the above