In this article, you will learn “NCERT Class 9 Geography Chapter 3 Question Answer“, related to the drainage system of India. These solutions will help you to understand the drainage system of India, its importance, and the problems associated with it. These solutions can prove to be extremely helpful for students preparing for their CBSE board exams. These are prepared by subject experts, keeping in mind the latest CBSE syllabus and exam pattern.
ncert solutions for class 9 geography chapter 3
Exercise of Class 9 Geography Chapter 3
1. Choose the right answer from the four alternatives given below.
(i) In which of the following states is Wular Lake located?
(a) Rajasthan
(b) Punjab
(c) Uttar Pradesh
(d) Jammu and Kashmir
Answer: (d) Jammu and Kashmir
(ii) The river Narmada has its source at
(a) Satpura
(b) Amarkantak
(c) Brahmagiri
(d) Slopes of the Western Ghat
Answer: (b) Amarkantak
(iii) Which one of the following lakes is a saltwater lake?
(a) Sambhar
(b) Wular
(c) Dal
(d) Gobind Sagar
Answer: (a) Sambhar
(iv) Which one of the following is the longest river in Peninsular India?
(a) Narmada
(b) Godavari
(c) Krishna
(d) Mahanadi
Answer: (b) Godavari
(v) Which one of the following rivers flows through a rift valley?
(a) Mahanadi
(b) Krishna
(c) Tungabhadra
(d) Tapi
Answer: (d) Tapi
2. Answer the following questions briefly.
(i) What is meant by a water divide? Give an example.
Answer: A water divide is a high land area that separates two or more river systems. Water on one side of the divide flows into one river system, while water on the other side flows into a different river system. For example, the Great Divide in North America separates the eastward-flowing rivers from the westward-flowing rivers.
(ii) Which is the largest river basin in India?
Answer: The Ganga River basin is the largest river basin in India. It covers an area of about 8,61,404 sq. km.
(iii) Where do the rivers Indus and Ganga have their origin?
Answer: The Indus River originates Near Manasarovar Lake, in Tibet, and flows through India and Pakistan.
The Ganga River originates from the Gangotri glacier in the Himalayas and flows through India and Bangladesh.
(iv) Name the two headstreams of the Ganga. Where do they meet to form the Ganga?
Answer: The Bhagirathi and the Alaknanda are the two headstreams of the Ganga. They meet at Devprayag in Uttarakhand to form the Ganga.
(v) Why does the Brahmaputra in its Tibetan part have less silt, despite a longer course?
Answer: The Brahmaputra in its Tibetan part has less silt, despite a longer course because it flows over hard and rocky terrain in Tibet, which limits erosion and the river carries a large amount of sediment.
(vi) Which two Peninsular rivers flow through a trough?
Answer: The two Peninsular rivers that flow through a trough are-
a) Narmada
b) Tapi
(vii) State some economic benefits of rivers and lakes.
Answer: Some economic benefits of rivers and lakes:
- Rivers and lakes are important sources of water for irrigation, drinking, and industrial purposes.
- They are used for transportation and the movement of goods and people from one place to another.
- They provide opportunities for recreational activities such as fishing, boating, swimming, and camping.
- They are used to generate hydroelectric power which is a renewable source of energy.
- They are important for the livelihoods of millions of people such as fishermen.
3. Below are given names of a few lakes in India. Group them under two categories – natural and created by human beings. (a) Wular (b) Dal (c) Nainital (d) Bhimtal (e) Gobind Sagar (f) Loktak (g) Barapani (h) Chilika (i) Sambhar (j) Rana Pratap Sagar (k) Nizam Sagar (l) Pulicat (m) Nagarjuna Sagar (n) Hirakund
Answer:
| Natural Lakes | Human Made Lakes |
| Wular | Gobind Sagar |
| Dal | Rana Pratap Sagar |
| Nainital | Nizam Sagar |
| Bhimtal | Nagarjuan Sagar |
| Loktal | Hirakud |
| Chilika | |
| Pulicat | |
| Sambhar | |
| Barapani |
4. Discuss the significant difference between the Himalayan and the Peninsular rivers.
Answer:
| The Himalayan rivers | The Peninsular rivers |
| These rivers are perennial. This flow throughout the year. | These rivers are seasonal. |
| These are steep, fast-flowing, with rapids and waterfalls. | These are gentle, slower, wider river channels. |
| These receive water from the Himalayan mountains. | These are dependent on monsoon rainfall. |
| These originate from the north of the mountain ranges. | These originate in the Western Ghats and flow towards the Bay of Bengal. |
5. Compare the east-flowing and the west-flowing rivers of the Peninsular Plateau.
Answer:
| East-Flowing Rivers | West-Flowing Rivers |
| These rivers flow towards the Bay of Bengal and the Indian Ocean. | These rivers flow towards the Arabian Sea and the Indian Ocean. |
| These are shorter in length. | These are longer in length. |
| These form wide deltas due to the flat terrain. | These form narrow and shallow estuaries. |
| These have limited hydroelectric potential. | These have significant hydroelectric potential. |
| These are suitable for navigation throughout the year. | These are suitable for navigation only during monsoons |
| Example-Godavari, Krishna, Mahanadi, Kaveri | Example-Narmada, Tapi, Sabarmati, Mahi, Luni |
6. Why are rivers important for the country’s economy?
Answer: Rivers are important for a country’s economy due to the following reasons:
- Water Supply: Rivers are important sources of water for irrigation, drinking, and industrial purposes.
- Transportation: Rivers provide a means of transportation for goods and people, especially for bulky and heavy cargo.
- Trade and Commerce: Riverbanks and ports along the river provide favorable locations for trade and commerce activities which increases the economic activity in the region.
- Hydroelectric Power: Rivers can be used for hydroelectric power generation, providing a source of renewable energy, which is essential for the country’s energy security.
- Fisheries: Rivers provide important habitats for fish and other aquatic animals, which can be harvested for commercial purposes.
- Tourism: Rivers offer a natural and scenic setting for recreational activities, such as boating, fishing, camping, and river rafting, which can generate revenue from tourism.
Map Skills
i) On an outline map of India mark and label the following rivers: Ganga, Satluj, Damodar, Krishna, Narmada, Tapi, Mahanadi, and Brahmaputra.
Answer:
- Ganga in Uttar Pradesh
- Satluj in Punjab
- Damodar in Jharkhand, West Bengal
- Krishna in Andhra Pradesh
- Narmada in Madhya Pradesh & Gujarat
- Tapi in Southern Gujarat & Maharashtra
- Mahanadi in Orrisa
- Brahmaputra in Assam
(ii) On an outline map of India mark and label the following lakes: Chilika, Sambhar, Wular, Pulicat, Kolleru.
Answer:
- Chilika in Orissa
- Sambhar in Rajasthan
- Wular in Jammu & Kashmir
- Pulicat in Andhra Pradesh and Tamil Nadu
- Kolleru in Andhra Pradesh
Project / Activity
Solve the crossword puzzle with the help of given clues:
Across
- Nagarjuna Sagar is a river valley project. Name the river.
- The longest river in India.
- The river originates from a place known as Beas Kund.
- The river rises in the Betul district of MP and flows westwards.
- The river was known as the “Sorrow” of West Bengal.
- The river on which the reservoir for the Indira Gandhi Canal has been built.
- The river whose source lies near Rohtang Pass.
- The longest river in Peninsular India.
Down
9. A tributary of Indus originating from Himachal Pradesh.
10. The river flowing through the fault, drains into the Arabian Sea.
11. A river of South India, which receives rainwater both in summer and winter.
12. A river that flows through Ladakh, Gilgit, and Pakistan.
13. A important river of the Indian desert.
14. The river which joins Chenab in Pakistan.
15. A river that rises at Yamunotri glacier.
Answer:
Conclusion
The Ncert Solution Class 9 Geography Chapter 3 Drainage provides students with a comprehensive understanding of the river systems & their importance in India. By studying and practicing these NCERT Solutions, students can enhance their knowledge, improve their problem-solving skills, and perform better in their exams. You can access them by visiting the website. If you have any other queries about Ncert Solutions Class 9 Geography Chapter 3 drainage feel free to reach us so that we can revert back to us at the earliest possible.
FAQ of ncert Class 9 Geography Chapter 3
1. How do drainage systems work?
Drainage systems collect and remove excess water using gravity, pipes, or channels to direct the flow of water to a collection point.
2. What are the key components of a drainage system?
The key components of a drainage system are a catch basin, pipes or channels, filters, outfall, gradient, check valves, pump, and maintenance access points.
3. What is drainage and why is it important?
Drainage is the process of collecting and removing excess water from an area. It is important to prevent flooding, water damage, soil erosion, and other related problems.