CBSE Solutions for Class 10 Geography

Select CBSE Solutions for class 10 Subject & Chapters Wise :

Name the state of the Dams :- Koyna Dam 

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Answer :

Maharashtra

Name the state of the Dams :- Maithon Dam

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Answer :

Jharkhand

Name the state of the Dams :- Rihand Dam

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Uttar Pradesh

Name the state of the Dams :- Tungabhadra Dam

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Karnataka

Name the state of the Dams :- Bhavani Sagar dam

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Tamil Nadu

Name the river on which Mettur dam has been built.
 

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Answer :

Mettur dam has been built the Kaveri.
Name the state of the Dams

Name the river on which Nagarjunsagar dam is constructed.

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Answer :

The Nagarjunsagar Dam is built on the Krishna.

Name the river on which Sardar Sarovar dam is built.

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Answer :

Sardar Sarovar dam is built on the Narmada.

What is the traditional system of rainwater harvesting?

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Answer :

The traditional system of rainwater harvesting is to build underground tanks or
tankas for storing drinking water. This system is mainly practised in the arid and semi-arid regions of Rajasthan.

On which river is the Nagarjunsagar dam built?

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Answer :

The Nagarjunsagar Dam is built on the Krishna.

What is the need of rainwater harvesting?
 

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Answer :

Rainwater harvesting is needed to provide it for agriculture, collect drinking water, irrigate the fields and to moisten the soil.

Name two techniques of rooftop rainwater harvesting.

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Answer :

•     Construction of tanks so as to store the rainwater
•    Collection of excess rainwater in the dugwell

What was the main purpose of launching multi-purpose projects in India after
independence?
 

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Answer :

The main purpose of launching multi-purpose projects after independence was that they would integrate development of agriculture with rapid industrialization.

Explain how water become a renewable resources?

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Answer :

Water cycle continues through the steps of evaporation, condensation and Precipitation. Thus, it become a renewable resources.

What does the Qualitative scarcity of water mean?

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Answer :

Qualitative scarcity of water means bad Quality of water due to industrial waste and impurities due to chemical fertilizers and pesticides used in agriculture which makes water hazardous for human use.

Why did Jawaharlal Nehru proclaim the dams as the “temples of modern India”? Explain any three reasons.

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Answer :

Jawaharlal Nehru proclaimed the dams as the “temples of modern India” because:
• It would integrate development of agriculture and the village economy.
• Provide hydroelectricity for houses and industries.
• They eliminate or reduce flooding.

Mention any four main objectives of multipurpose river valley projects. Name any two Multipurpose Projects of India.

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Answer :

Four main objectives of multipurpose river valley projects are-
• For irrigational activities.
• To generate hydroelectricity.
• To control flood.
• For recreation
Two multipurpose projects are Bhakhra nagal project and Hirakud project.

What is Dam?

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Answer :

A dam is a barrier across flowing water.

On which river has the Hirakud Dam been constructed? 
 

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Answer :

River Mahanadi.

On which river ‘Bhakhra Nangal Dam’ has been constructed?

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Answer :

River Satluj.

Which river is known as the ‘River of Sorrow’?

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Answer :

Damodar River.

Name any one river valley project which has significantly contributed to the loss of forest?

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Answer :

Sardar Sarovar Dam2.

Name two Environmental movements which were against the multi-purpose projects.

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Answer :

Narmada Bachao Andolan and Tehri Dam Andolan.

Who proclaimed dams as the temple of modern India?

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Answer :

Jawaharlal Nehru.

What percentage of the total volume of world’s water is estimated to exist as oceans?

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Answer :

96.5%

What are the social consequences of multipurpose projects?

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Answer :

  1. Local people, especially the landless people, did not gain from these projects.
  2. It led to displacement of people which deprived the people of their land and livelihood.
  3. It has increased the social gap between the richer landowners and the landless poor.
  4. Dams created conflicts between people wanting different uses and benefits from the same water resources.
  5. Inter-state water disputes are also becoming common with regard to sharing the costs and benefits of the multipurpose projects.

Multipurpose projects and dams have been the cause of many new social movements. Name two such social movements and write the underlying causes for these movements.

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Answer :

Resistance to these projects came from social movements, e.g.,

  1. ‘Narmada Bachao Andolan’ and
  2. ‘Tehri Dam Andolan’.
    Their major concerns were as follows:
    • Initially the environmental concerns were of utmost importance.
    • Dams have resulted in large-scale displacement of local communities.
  1. people have to give up their land and livelihood.
  2. people do not benefit from such projects as they are even deprived of the local sources on which they have little control.
  1. settlements and agricultural lands are submerged under water.
  1. of the displaced persons is now the prime concern of these movements.

‘Construction of dams on rivers has caused environmental degradation.’ Give reasons to support this statement. (2015)

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Answer :

1.    Damming of rivers affects their natural flow causing poor sediment flow.
2.    Excessive sedimentation at the bottom of the reservoir.
3.    Lack of sediments results in
•    rockier stream bed and
•    poorer habitat for the river’s aquatic life.
    

Dams also fragment rivers, making it difficult for acquatic fauna to migrate, especially for spawning.
 

The reservoirs submerge the existing vegetation and soil, leading to its decomposition over time.

Flood plains are deprived of silt and khadar, affecting the fertility levels of the soil.

Construction of dams also faces resistance because of large scale displacement of local communities.

Why are multipurpose river valley projects called ‘The Temples of Modern India’? Who first made this statement? (2014)

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Answer :

Jawahar Lai Nehru proclaimed that multipurpose projects are ‘The Temples of Modern India’, because they were thought of as the vehicle that would lead the nation to development and progress. He believed that these projects with their integrated water resource management approach would integrate development of agriculture and the village economy with rapid industrialisation and growth of the urban economy.

Dams or multipurpose river valley projects have the following advantages:

  1. They bring water to those areas which suffer from water scarcity and also provide water for irrigation.
  2. These projects generate electricity for industries and our homes.
  3. They help in controlling floods by regulating the water flow.
  4. These projects can be used for recreation, inland navigation and fish breeding.

What is the main difference between traditional dams and modern dams?

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Answer :

Traditionally dams were built to impound rivers and rainwater that could be used later to irrigate the agricultural fields.

Today, dams are referred to as multipurpose projects where many uses of the impounded water are integrated with one another. The main purposes served by these projects are irrigation, electricity generation, flood control, water supply for domestic and industrial use, fish breeding and tourism.

What is a dam? Describe the functioning of dams? On what basis are dams classified into different types?

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Answer :

A dam is a barrier across flowing water that obstructs, directs or retards the flow, creating a reservoir, lake or impoundment.
A dam is the reservoir and not the whole structure.
Functioning:
Most dams have a section called spillway or weir over which or through which, water will flow intermittently or continuously.
Classification:
Dams are classified according to structure, intended purpose or height.

  • According to structure and materials used, they are classified as timber dams, embankment dams or masonry dams.
  • According to height, they are classified as large and major dams, low dams, medium height dams and high dams.

How was water conserved in ancient India? Give any four examples in support of your answer. (2012)

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Answer :

Archaeological and historical records show that from ancient times India has been constructing sophisticated hydraulic structures like dams, reservoirs, embankments and canals for irrigation.

  1. For example, in the first century B.C., Allahabad had sophisticated water harvesting system channelling the flood water of the river Ganga.
  2. During the time of Chandragupta Maurya, dams, lakes and irrigation systems were extensively built.
  3. Sophisticated irrigation works have been found in Kalinga in Odisha, Nagarjunakonda in Andhra Pradesh, Bennur in Karnataka and Kolhapur in Maharashtra.
  4. Bhopal lake, built in the 11th century, was one of the largest artificial lakes of its time.
  5. In the 14th century, Iltutmish constructed a tank in Hauz Khas, Delhi for supplying water in Siri Fort area.

What were the different types of hydraulic structures constructed in Ancient India? Give examples.

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Answer :

The different types of hydraulic structures were:

  • Dams built of stone rubble e.g., during Chandragupta Maurya’s time, dams, lakes and irrigation systems were extensively built.
  • Reservoirs or lakes like the Bhopal lake of the 11th century which was one of the largest artificial lakes of its time.
  • Embankments and canals for irrigation. Sophisticated irrigation works have been found in Kalinga (Orissa), Kolhapur (Maharashtra), Nagarjunakonda (Andhra Pradesh) etc.
  • Many tanks were built to store rainwater e.g., the tank in Huaz Khas in Delhi was built in 14th century to supply water to Siri Fort area.

Write some measures adopted for conservation of water resources. (2015)

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Answer :

Measures for water conservation:

  1. Do not overdraw the ground water, recharge the ground water by techniques like rainwater harvesting.
  2. Avoid wastage of water at all levels.
  3. Do not pollute the water.
  4. Increasing the water resources by tapping the rainwater in reservoirs, watershed development programmes, etc.
  5. Adopting water conserving techniques of irrigation, e.g., drip irrigation and sprinklers etc., especially in dry areas. Sufficient water percolation facilities should be increased to help in raising the level of the water table.

What is the need for conservation of water resources? (2015)

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Answer :

  1. Our water resources are limited and our requirements are increasing day by day. The water resources are unevenly distributed.
  2. Most of our resources especially in the cities and urban areas are polluted and unsuitable for drinking and other purposes.
  3. To safeguard ourselves from health hazards.
  4. We need to conserve water for the continuation of our livelihoods and to prevent degradation of our natural ecosystem. To ensure food security and for continuation of our livelihoods.
  5. For productive activities of the nation.
  6. To prevent degradation of our natural ecosystem.

1

Bhavani Sagar dam

A

Karnataka

2

Tungabhadra Dam

B

Uttar Pradesh

3

Rihand Dam

C

Tamil Nadu

4

Maithon Dam

D

Jharkhand

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Answer :

1-C, 2-A, 3-B, 4-D

1

Krishnarajasagar Dam

A

Cheruthoni

2

Indira Sagar Dam

B

Kaveri

3

Cheruthoni Dam

C

Narmada

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Answer :

1-B, 2-C, 3-A

1

Krishnarajasagar Dam

A

Karnataka

2

Indira Sagar Dam

B

Kerala

3

Cheruthoni Dam

C

Madhya Pradesh

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Answer :

1-A, 2-C, 3-B

1

Maithon Dam

A

Tamil Nadu

2

Koyna Dam

B

Jharkhand

3

Bisalpur Dam

C

Maharashtra

4

Mettur Dam

D

Rajasthan

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Answer :

1-B, 2-C, 3-D, 4-A

1

Bhavani Sagar dam

A

Rihand

2

Tungabhadra Dam

B

Bhavani

3

Rihand Dam

C

Barakar

4

Maithon Dam

D

Tungabhadra

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Answer :

1-B, 2-D, 3-A, 4-C

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The CBSE Books for class 10 are designed as per the syllabus followed Gujarat Secondary and Higher Secondary Education Board provides key detailed, and a through solutions to all the questions relating to the GSEB textbooks.

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For more details about the GSEB books for Class 10, you can access the PDF which is as in the above given links for the same.

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