Physiographic Division and Water Resources of India
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Questions and Answers

What is the process used to conserve rainwater by collecting, storing, conveying, and purifying rainwater that runs off from rooftops, parks, roads, open grounds, etc. for later use?

Rainwater harvesting

Where is alluvial soil found in North India?

In the large plain formed by the river systems of Indus, Ganga, and Brahmaputra.

What are the consequences of soil erosion?

Soil particles breaking down by wind, water, snow, waves, etc.

What is the most suitable crop for black soil in India?

<p>Cotton</p> Signup and view all the answers

What are the features of desert soil in India?

<p>Coarse texture, sandy texture, poor in organic matter, and not fertile.</p> Signup and view all the answers

What are the five physiographic divisions of India?

<ol> <li>Northern mountain (Karakoram, Himalayan), 2. Northern plain (Al Rajasthan plains, Punjab Haryana plain, Ganga plain, Brahmaputra plain), 3. Peninsular plateau, 4. Coastal plains, 5. Island</li> </ol> Signup and view all the answers

Name the two classes of rivers in India based on their location.

<ol> <li>The river of North (Indus system, Ganga system, Brahmaputra), 2. The river of South (West flowing - Naramada, Tapti; East flowing - Mahanandi, Godavari, Kaveri, Krishna)</li> </ol> Signup and view all the answers

What are the three methods for irrigation in India?

<p>(a) Wells, (b) Tubewells, (c) Canals</p> Signup and view all the answers

List four advantages of irrigation.

<ol> <li>Increase in food production, 2. Modification of soil and climate, 3. Generation of hydro-electricity power, 4. Domestic and industrial water supply</li> </ol> Signup and view all the answers

Name four disadvantages of irrigation.

<ol> <li>Water logging, 2. Salinity of soil, 3. Ill aeration of soil, 4. Pollution of ground water</li> </ol> Signup and view all the answers

Study Notes

Water Harvesting and Conservation

  • Rainwater harvesting involves collecting, storing, conveying, and purifying rainwater that runs off from rooftops, parks, roads, open grounds, and other surfaces for later use.

Soil Types and Distribution

  • Alluvial soil is found in the Indo-Gangetic Plain in North India.

Soil Erosion

  • Consequences of soil erosion include loss of fertile topsoil, reduced crop yields, increased sedimentation in waterways, and decreased water-holding capacity.

Crop Selection

  • Black soil in India is most suitable for cotton cultivation.

Desert Soil

  • Desert soil in India is characterized by low humus and nutrient content, low water-holding capacity, and high salt concentration.

Physiographic Divisions of India

  • The five physiographic divisions of India are the Himalayan Mountains, the Northern Plains, the Peninsular Plateau, the Indian Desert, and the Islands.

River Classification

  • Rivers in India are classified into two categories based on their location: Himalayan rivers (e.g., Ganga, Brahmaputra) and Peninsular rivers (e.g., Godavari, Krishna).

Irrigation Methods

  • There are three main methods of irrigation in India: surface irrigation, sprinkler irrigation, and drip irrigation.

Advantages of Irrigation

  • Four advantages of irrigation are increased crop yields, improved crop quality, enhanced food security, and increased farmer income.

Disadvantages of Irrigation

  • Four disadvantages of irrigation are waterlogging, soil salinization, increased energy consumption, and reduced groundwater levels.

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Description

This quiz covers the physiographic divisions of India including the northern mountains, northern plains, peninsular plateau, coastal plains, and islands. It also includes the classification of water resources into the rivers of the north and south, with details about specific river systems.

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