World Geography
2015
Ocean Currents

What explains the eastward flow of the equatorial counter-current?

B.Convergence of the two equatorial currents
D.Occurrence of the belt of calm near equator
A.The Earth’s rotation on its axis
C.Difference in salinity of water

Correct Answer: Option A

The eastward flow of the equatorial counter-current is primarily explained by the Earth's rotation on its axis. This is due to the Coriolis effect and the pressure gradient created by the accumulation of water along the western margins of the oceans due to the westward-flowing equatorial currents.

Hence, option a is correct.

Sources:

  • [Old NCERT – Class XIth – Principles of Geography](Replace with actual link if available)