Match List-I with List-II and select the correct answer by using the codes given below the lists: List-I (River) A) Colorado B) Damodar C) Nile D) Zambezi List-II (Dam) 1) Aswan 2) Cariba 3) Panchet Hill 4) Hoover

The correct answer is D, which pairs Colorado with Hoover (4), Damodar with Panchet Hill (3), Nile with Aswan (1), and Zambezi with Kariba (2). The question prints 'Cariba', which is a typo for Kariba.

• Colorado - Hoover Dam (4): Built in the USA in the 1930s on the Colorado River. It was earlier called Boulder Dam and renamed Hoover in 1947.
• Damodar - Panchet Hill Dam (3): Built on the Damodar in Jharkhand/West Bengal region. Aspirants often confuse it with Maithon or Tilaiya, which are also on the Damodar.
• Nile - Aswan High Dam (1): Completed in Egypt in 1970. It created Lake Nasser and is a standard Mains example of flood control and hydropower trade-offs.
• Zambezi - Kariba Dam (2): Lies between Zambia and Zimbabwe and created Lake Kariba, one of the largest man-made reservoirs.

The core concept is river-dam identification, which links to the Geography river systems and water resources units. In Mains, these dams support answers on displacement, reservoir-induced seismicity and transboundary water sharing.

Trap: Matching by memory of only one famous dam and guessing the rest. Check each river's dam individually.