Which is the longest river in India?
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This question examines an important river-or-lake fact: “Which is the longest river in India?” The correct answer is Ganga. The Ganga (Ganges) is the longest river in India with a total length of about 2525 km. A river system includes its source, tributaries, distributaries, drainage basin, watershed, channel, floodplain, delta or estuary and final outlet. River behaviour depends on relief, geology, rainfall, snowmelt, sediment load, vegetation and human intervention. Examination questions often confuse a river’s source with its mouth, a left-bank tributary with a right-bank tributary, or a natural lake with a reservoir.