Exercise Question Answer for Chapter 3 Water Resources(Geography) Class X Subject Social Science
1. Multiple Choice Questions
(i) Classify each situation as ‘suffering from water scarcity’ or ‘not suffering from water scarcity’:
(a) Region with high annual rainfall – Not suffering from water scarcity
(b) Region having high annual rainfall and large population – Suffering from water scarcity
(c) Region having high annual rainfall but water is highly polluted – Suffering from water scarcity
(d) Region having low rainfall and low population – Not suffering from water scarcity
(ii) Which one is not an argument in favour of multi-purpose river projects?
(a) Multi-purpose projects bring water to those areas which suffer from
water scarcity.
(b) Multi-purpose projects by regulating water flow helps to control floods.
(c) Multi-purpose projects lead to large scale displacements and loss of
livelihood.
(d) Multi-purpose projects generate electricity for our industries and our
homes.
Answer: (c) Multi-purpose projects lead to large scale displacements and loss of livelihood.
(iii) Identify and correct the false statements:
(a) Incorrect: Multiplying urban centres with large and dense populations and urban lifestyles have helped in proper utilisation of water resources.
✅ Correct: These have increased the misuse and over-exploitation of water resources.
(b) Incorrect: Regulating and damming of rivers does not affect the river’s natural flow and its sediment flow.
✅ Correct: It does affect the river’s natural flow and reduces sediment flow.
(c) Incorrect: Today in Rajasthan, the practice of rooftop rainwater harvesting has gained popularity despite high water availability due to the Indira Gandhi Canal.
✅ Correct: The practice has declined due to high water availability from the Indira Gandhi Canal.
2. Answer the following in about 30 words
(i) Explain how water becomes a renewable resource.
Water is constantly renewed through the hydrological cycle.
It evaporates, condenses, and falls as precipitation.
Surface water and groundwater are continuously recharged.
(ii) What is water scarcity and what are its main causes?
Answer:
Water scarcity means shortage of water for use.
Causes: Increasing population, overuse, pollution, unequal access, and inefficient water management.
(iii) Compare the advantages and disadvantages of multi-purpose river projects.
Answer: Advantages and disadvantages of multi-purpose river projects:
Advantages:
Irrigation, electricity generation, flood control, drinking water supply.
Disadvantages:
Displacement of people, loss of land and biodiversity, and ecological damage.
3. Answer the following in about 120 words
(i) Discuss how rainwater harvesting in semi-arid regions of Rajasthan is
carried out.
Answer: Rainwater harvesting in semi-arid regions of Rajasthan:
Underground tankas are built in homes to collect rainwater.
Connected to sloping rooftops using pipes.
First rainwater is allowed to clean the roof, then water is collected.
Stored water is used for drinking and household needs.
Khadins and Johads are also used to store rainwater for farming.
Helps in surviving long dry periods and improves water availability.
(ii) Describe how modern adaptations of traditional rainwater harvesting
methods are being carried out to conserve and store water.
Answer: Modern adaptations of traditional rainwater harvesting:
Rooftop systems are installed in homes to collect and store rainwater.
Used in both urban and rural areas (e.g., Gendathur in Karnataka).
Water stored in underground tanks or sumps.
Excess water is used to recharge wells and aquifers.
Helps in reducing water shortage, especially in summer.
Used widely in Tamil Nadu and Shillong as part of state policies.
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Chapter 3-Water Resources
Important Qoestion Answer- CLICK HERE
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