Out of the following which combination is incorrect ?

Question

UnlockIAS · Accepted Answer

Correct — A, 'Telegraph Plateau – Indian Ocean' is the incorrect combination. The Telegraph Plateau is a relatively shallow submarine rise in the North Atlantic Ocean, between Newfoundland and Ireland, along which the first transatlantic telegraph cable was laid in 1858 — so tying it to the Indian Ocean is wrong. The other three are correctly matched: the Cocos Ridge (the paper prints 'Cocoa') lies in the eastern Pacific, the Walvis Ridge in the South Atlantic off Namibia, and the Agulhas Basin in the southern Indian Ocean off South Africa.

Why the other options are wrong — (b) This pairing is correct: the Cocos Ridge is an aseismic ridge in the eastern Pacific Ocean (on the Cocos Plate, off Central America), so it is not the mismatch.  (c) Correct pairing: the Walvis Ridge is a major aseismic ridge in the South Atlantic Ocean, running from off Namibia toward Tristan da Cunha — not the mismatch.  (d) Correct pairing: the Agulhas Basin lies in the southern Indian Ocean off the southern tip of South Africa — not the mismatch.

Concept: This tests ocean-floor relief features (ridges, plateaus and basins) and the oceans they belong to. 'Telegraph Plateau' is historically famous as the North Atlantic route of the first transatlantic cable — the giveaway that it is Atlantic, not Indian. Cocos Ridge (Pacific), Walvis Ridge (South Atlantic) and Agulhas Basin (southern Indian Ocean) are standard oceanography associations.

State PCS 2019 Q99 — Geography PYQ with Answer

State PCS 2019 Q99 — Geography PYQ with Answer