UPSC Civil Services 2020 Prelims General Studies Paper I

The Mekong begins on the Tibetan Plateau and runs for more than 2,600 miles through China, Myanmar, Thailand, Laos, Cambodia, and Vietnam before emptying into the South China Sea. Thames river flows into the North Sea via the Thames Estuary. Rising in the Valdai Hills northwest of Moscow, the Volga discharges into the Caspian Sea, some 2,193 miles (3,530 kilometres) to the south. The source of the Zambezi River is located at Kalene Hills in Zambia and travels roughly 2600 km to the south and east before discharging into the Indian Ocean at the Mozambican coast.