Q- Answer the following questions briefly.
1. What is meant by a water divine. Give an example?
Answer- The line that separates neighbouring drainage basin is known as Water divine. For example Western Ghats is a water divine.
Water divide is also known as drainage divine, divine, ridgeline, watershed and water parting.
2. Which is the largest river basin in India?
Answer- The largest river basin in India is Ganga-Brahmaputa-Meghna basin.
3. Where do the rivers Indus and Ganga have their origin?
Answer- The Ganga river has its origin in Gangotri glacier in Uttranchal while the Indus river has its origin in Tibet near the Mansarovar Lake.
4. Name two headstreams of the Ganga. Where do they meet form Ganga?
Answer- Alaknanda and Bhagirathi are the two headstreams of the Ganga. These both headstreams meet to form Ganga in Devprayag.
5. Why does Brahmaputra in the Tibetan part have less silt, despite a longer course?
Answer- The Brahmaputra river carries a huge water and very less silt in Tibet because it is a very cold and dry area. But after it enter in India, it is fed by heavy rain due to this rain it carries a lots of silt and water.
6. Which two peninsular rivers flow through trough?
Answer- The two peninsular rivers which flow through trough are Narmada and Tapi. These two rivers forms estuaries while entering in sea.
7. State some economic benefits of river and lakes.
Answer- Some main economic benefits of river and lakes are as follows:
1. Rivers provide a huge source of water for various activities such as irrigation e.t.c.
2. River also helps in generating Hydro-electricity.
3. Lakes such as Sambhar provide edible salt.
4. Lakes also provide tourism and provides recreation.