Formulae Handbook for Class 10 Maths and Science. Question-5 Which one of the following statements is not an argument in favour of multipurpose river projects? Solution: a Multi-purpose projects bring water to those areas, which suffer from water scarcity. Question-6 Here is a false statement. Identify the mistakes and rewrite them correctly. Multiplying urban centers with large and dense populations and urban lifestyles have helped in proper utilisation of water resources.
Solution: Multiplying urban centers with large and dense populations and urban lifestyles have helped in improper utilisation of water resources.
Here is a false statement. Question Here is a false statement. In Gujarat, the Sabarmati basin farmers were agitated when higher priority was given to water supply in urban areas, particularly during droughts. Solution: In Gujarat, the Sabarmati basin farmers were not agitated when higher priority was given to water supply in urban areas, particularly during droughts.
Today in Rajasthan, the practice of rooftop rainwater water harvesting has gained popularity despite high water availability due to the Rajasthan Canal. Solution: Today in Rajasthan, the practice of rooftop rainwater water harvesting has gained popularity despite low water availability due to the Rajasthan Canal.
Question Explain how water becomes a renewable resource. This freshwater is mainly obtained from surface run off and ground water that is continually being renewed and recharged through the hydrological cycle. All water moves within the hydrological cycle ensuring that water is a renewable resource. Solution: Water scarcity is the shortage of water but it is not only associated with regions having low rainfall or those that are drought-prone.
The availability of water resources varies over space and time, mainly due to the variations in seasonal and annual precipitation, but water scarcity in most cases is caused by overexploitation, excessive use and unequal access to water among different social groups.
Dams also fragment rivers making it difficult for aquatic fauna to migrate, especially for spawning. It has great ecological consequences like salinisation of the soil. At the same time, it has transformed the social landscape i. The dams that were constructed to control floods have triggered floods due to sedimentation in the reservoir. Moreover, the big dams have mostly been unsuccessful in controlling floods at the time of excessive rainfall.
It was also observed that the multi-purpose projects induced earthquakes, caused waterborne diseases and pests and pollution resulting from excessive use of water. Solution: In the semi-arid and arid regions of Rajasthan, particularly in Bikaner, Phalodi and Barmer, almost all the houses traditionally had underground tanks or tankas for storing drinking water.
The tanks 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 house or the courtyard. They were connected to the sloping roofs of the houses through a pipe. 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 then collected. The rainwater can be stored in the tankas till the next rainfall making it an extremely reliable source of drinking water when all other sources are dried up, particularly in the summers. Rainwater, or palar pani, as commonly referred to in these parts, is considered the purest form of natural water. Solution: Fortunately, in many parts of rural and urban India, rooftop rainwater harvesting is being successfully adapted to store and conserve water.
Nearly households 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 adaptation. Rainwater running down from the roofs is not fed into drains. Instead it is piped into underground reservoirs. Multiple Choice Questions. Which one of the following is not the cause of water scarcity? Which state has made roof top rainwater harvesting structure compulsory to all the houses across the state?
On which of the following rivers is Koyna dam built? Nagarjuna Sagar Dam is built on which river? Which of the following statements is not an argument in favour of multi-purpose river projects? Additional Questions 6. Bamboo drip irrigation is common in the state of a Rajasthan b Madhya Pradesh c Meghalaya d Karnataka.
Water is a renewable resource because a it is being recycled by human beings. Oceans contain ����.. On which river is the Bhakra Nangal Dam located? Hirakud dam is located in which one of the following states? Mettur Dam is located on a R. Krishna b R. Mahanadi c R. Narmada d R. Which one of the following is not a source of freshwater? What percentage of the global precipitation is received in India?
Water scarcity occurs due to i low rainfall in a region ii large population iii over-exploitation iv unequal access a i and ii b ii and iii c i and iv d All of the above. Water scarcity is a serious problem in recent years mainly in a Cities b Rural areas c Deserts d Mountains. In India hydroelectric power contributes to what percentage of the total electricity produced?
We need to conserve water because i it will be exhausted. In which state is the Tehri Dam located? In semi arid regions of Rajasthan the traditional system of storing drinking water in underground tanks are called a Dugwells b Johads c Tankas d None of the above.
Which of the following Indian rivers are the most polluted? Which one of the following statements is incorrect as regards to opposition against multi-purpose projects. Khadins and Johads are the rain fed storage structures of which of the following states? Which village in Karnataka has earned a rare distinction of being rich in rain water? On which of the following rivers is the Salal Project located? By how many people will live in absolute water scarcity?
Which one of the following options are incorrect as regards to water scarcity in cities. Which one of the following is not the example of Hydraulic structures in Ancient India? Bamboo drip irrigation is common in the state of a Rajasthan b Madhya Pradesh c Meghalaya d Karnataka Kaveri Water scarcity occurs due to i low rainfall in a region ii large population iii over-exploitation iv unequal access a i and ii b ii and iii c i and iv d All of the above Water scarcity is a serious problem in recent years mainly in a Cities b Rural areas c Deserts d Mountains In semi arid regions of Rajasthan the traditional system of storing drinking water in underground tanks are called a Dugwells b Johads c Tankas d None of the above RD Sharma Class 12 Solutions.
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