Which of the following are the natural ports of India? 1) Chennai 2) Tuticorin 3) Kochi 4) Vishakhapatnam Select the correct answer from the codes given below:

The answer is D (3 and 4). Kochi and Visakhapatnam are natural harbours, meaning their sheltered, deep water comes largely from geography and needs little dredging or artificial protection.

Here is how each option fits:

• Statement 1, Chennai: Wrong. Chennai is an artificial harbour, built by constructing breakwaters on an open, exposed coastline with no natural shelter.
• Statement 2, Tuticorin: Wrong. It is also an artificial harbour. It is now officially called Thoothukudi, and the port is named V.O. Chidambaranar Port.
• Statement 3, Kochi: Correct. Its harbour sits on a natural backwater and estuary system, sheltered by the Vypeen-Willingdon Island area.
• Statement 4, Visakhapatnam: Correct. Its natural deep-water harbour is one of the reasons it is among India's largest ports.

The core concept is the difference between natural and artificial harbours, which is part of Indian Geography (ports and coastal features). For Mains, it links to the discussion of port-led development, dredging costs and the Sagarmala programme.

Trap: Aspirants assume every major port is a natural harbour. Chennai is the classic exception, and Tuticorin is often confused with the others.