At Saralstudy, we are providing you with the solution of Class 10 Social Science - Contemporary India – II Water Resources according to the latest NCERT (CBSE) Book guidelines prepared by expert teachers. Here we are trying to give you a detailed answer to the questions of the entire topic of this chapter so that you can get more marks in your examinations by preparing the answers based on this lesson. We are trying our best to give you detailed answers to all the questions of all the topics of Class 10 Social Science - Contemporary India – II Water Resources so that you can prepare for the exam according to your own pace and your speed.
(i)
a) Not suffering from water scarcity.
b) Suffering from water scarcity.
c) Suffering from water scarcity.
d) Not suffering from water scarcity.
(ii)
c) Multi-purpose projects lead to large scale displacements and loss of livelihood.
(iii)
a) Multiplying urban centres with large and dense populations and urban lifestyles have resulted in improper and caused over exploitation of water resources.
b) Regulating and damming of rivers affect the river's natural flow and causes the sediment flow which settles at the bottom of the reservoir.
c) In Gujarat, the Sabarmati basin farmers were agitated when higher priority was given to water supply in urban areas, particularly during droughts.
d) Today in Rajasthan, the practice of rooftop rainwater water harvesting is declining due to high water availability from Indira Gandhi Canal.
i) Water cycle process that includes three steps i.e. evaporation, condensation and precipitation. All water that is used primarily ends up in the sea entering the hydrological cycle the water that disappears from the surface of the earth due to evaporation comes back in the form of rain. This is the never ending process which makes it a renewable resource.
(ii) Water scarcity occurs where there is not enough water availability to match the demand due to lack of fresh water demand.
It is caused by a growing population, unequal distribution of water, growing demand for water, over exploitation etc.
(iii) Advantages of multi-purpose river projects:
Multipurpose river projects help in electricity generation, irrigation, inland navigation, water supply for industrial flood control, fish breeding tourist attraction and domestic purposes.
Disadvantages of multi-purpose river projects:
Many native villages are submerged and people lose their livelihoods with little or no hope of rehabilitation. The local flora and fauna get destroyed.
1. In the semi arid and arid regions of rajasthan, particularly in Bikaner , phalodi amd barmer, almost all the houses traditionally had underground tanks or tankas for storing drinking water. The takes could be as large as a big room. The tankas were part of the well developed rooftop rainwater harvesting system and were built inside the main houses through a pipe. Rain falling on the rooftops would travel down the pipe and was stored in these underground tankas. The first spell of rain was usually not collected as this would clean the roofs and the pipes. The rainwater from the subsequent showers was the collected. The rainwater can be stored in the tankas till the next rainfall making it an extremely reliable sources of drinking water when all other sources are dried up particularly summer.
2. fortunately in many parts of rural and urban india, rooftop rainwater harvesting is being successfully adapted to store and conserve water. In gendathur a remote backward village in mystore Karnataka villagers have installed in their households rooftop rainwater harvesting system to meet their water needs. Nearly 200 household have installed this system and the village has earned the rare distinction of being rich in rainwater. Rainwater harvesting is once again being conserved through modern adaption. Rainwater running down from the roofs is not fed into drains. Instead it is piped into underground reservoirs.