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Drainage
Social Science (2025-26) · CBSE Class 9 · English Medium · 18 questions and answers
Sample questions
- Q: What is meant by a drainage system?
- A: Drainage refers to the river system of an area, that is, the way water from rainfall and other sources flows through channels.
- Q: What is a drainage basin?
- A: A drainage basin or catchment area is the region drained by a single river system and its tributaries.
- Q: What is a water divide?
- A: A water divide is an elevated area, such as a mountain or upland, that separates two adjoining drainage basins.
- Q: Into which two major groups are Indian rivers divided?
- A: Indian rivers are grouped into the Himalayan rivers and the Peninsular rivers.
- Q: Why are Himalayan rivers perennial?
- A: They are fed by both monsoon rainfall and melting snow from the mountains, so they flow throughout the year.
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