Class 11 Geography Important Chapter 27 Drainage System of India

Class 11 Geography Important Chapter 27 Drainage System of India Solutions English Medium As Per AHSEC New Syllabus to each chapter is provided in the list so that you can easily browse through different chapters ASSEB Class 11 Geography Important Solutions and select need one. AHSEC Class 11 Elective Geography Additional Notes English Medium Download PDF. HS 1st Year Finance Important Solutions in English.

Class 11 Geography Important Chapter 27 Drainage System of India

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Drainage System of India

Chapter: 27

EIGHTH UNIT : PHYSIOGRAPHY OF INDIA

IMPORTANT QUESTION AND ANSWER

Answer The Following Questions:

1. What is the length of the Narmada River?

Ans: The length of the Narmada River is 1312 km.

2. What is the name of the place where the Narmada River flows over marble rocks?

Ans: The place is called Marble Rock.

3. What are the rivers called that flow from lowlands, cut deep gorges through highlands, and enter another lowland?

Ans: They are called antecedent rivers.

4. Based on their source, into how many categories are Indian rivers divided? Name them.

Ans: Indian rivers are divided into two categories:

(i) Himalayan rivers.

(ii) Peninsular plateau rivers.

5. Name another famous river of the Peninsular region.

Ans: Kaveri.

6. What is a watershed or water divide?

Ans: The ridge line that separates the drainage basins of two rivers is called a watershed or water divide.

7. Where does the National Water Divide end?

Ans: It ends at the India–China border.

8. What is the length of the National Water Divide?

Ans: The length is 2750 km.

9. From where does the National Water Divide begin?

Ans: It begins from Kanyakumari.

10. The south-flowing rivers Kaladan and Karnafuli of Bangladesh drain into which sea?

Ans: The Bay of Bengal.

Long Question & Answer:

1. Discuss the Narmada and Tapi rivers.

Ans: The Narmada and Tapi are two major rivers of western India. Both flow through the Peninsular Plateau and serve as important water resources.

The Narmada originates in the Maikala Range of Madhya Pradesh and flows 1312 km westward into the Arabian Sea. It carries about 30.05 cubic km of water annually and supports agriculture in Gujarat and Maharashtra. Major tributaries include Shivanath, Hasdeo, and Mand. Notable features include the Dhuandhar Falls and the Marble Rock gorge at Bhedaghat.

The Tapi originates in the Mahadeo Hills of Betul district, Madhya Pradesh, and flows 724 km through Madhya Pradesh, Maharashtra, and Gujarat. It drains into the Arabian Sea and carries about 7.4 cubic km of water annually. It is important for irrigation and hydropower in the region.

2. What is a mineral? Explain its properties and types.

Ans: A mineral is a naturally occurring, solid, crystalline substance with a definite chemical composition. Properties include hardness, luster, color, streak, density, and magnetism.

Types of minerals:

(i) Metallic minerals (e.g., hematite, bauxite)

(ii) Non-metallic minerals (e.g., quartz, feldspar)

(iii) Organic minerals (e.g., coal, petroleum)

3. What is a rock? Describe the major types of rocks.

Ans: A rock is a natural solid formed by the combination of minerals.

Types of rocks:

(i) Igneous rocks – formed by cooling of magma/lava.

(ii) Sedimentary rocks – formed by deposition and compaction of sediments.

(iii) Metamorphic rocks – formed due to heat and pressure acting on existing rocks.