In this article, We have share RBSE Solutions for Class 12 English Rainbow Chapter 1 Water. These Solutions are solved by subjects experts.
Activity 1: Comprehension
A. Tick (✓) the correct alternative:
Question 1. What is the true Elixir?
(b) desi ghee
Question 2. What is the cheapest form of internal transport?
Water in a landscape may be compared to the …………… in a human face. (Fill in the blank)
Much of Indian agriculture depends on seasonal ……………….. (fill in the blank)
(b) rainfall (RBSE Solutions)
B. State whether the following statements are True or False. Write ‘T’ for true and ‘F’ for false:
1. Water has the power to carry silt. True
2. Water has played an important role in shaping the course of the earth’s history. True
3. Water is not the basis of life. False
4. Conservation of water and afforestation are not connected with each other. False
5. Soil erosion is harmful to successful agriculture. True
C. Answer the following questions in about 30-40 words each:
How was Egypt made by the river Nile?
The river Nile brought the finest silt in its flood waters from Abyssinia and Central Africa and created its valley in Egypt. This fertile valley proved a boon in the creation of the civilization of Egypt. Thus Egypt was made by the river Nile.
What made the wonderful difference between the Libyan Desert and the Valley of the Nile?
The wonderful difference between the Libyan Desert and the Valley of the Nile was because of the respective absence and presence of water. Water barred or made the fertility of the soil.
How does water add to the beauty of the countryside?
Answer: (RBSE Solutions)
The rain-fed tanks little streams trickling over rocks in the countryside look very beautiful. One can enjoy looking upon the sun rising or setting over them. Thus, water adds to the beauty of the countryside. It can be compared to the eyes of a landscape.
What role do water tanks play in South Indian agriculture?
Water tanks provide good irrigation facility in South Indian agriculture. They are a good source of water to the crops. In Mysore, much of the rice is grown in them.
Describe the formation of silt by river water.
Rivers carry fairly large and heavy particles with their floodwater. Flowing with water too long distances, these particles are rubbed together. This way they turn into very fine quality clay silt.
Question 6. ( RBSE 12th English Solutions )
What are the successive steps in the process of soil erosion?
The earliest steps in the process of soil erosion generally go unnoticed. Then the soil is cut up and washed away and deep gullies and ravines are seen in the earth. Thus a very precious layer of soil is washed away.
What are the various measures suggested to check soil erosion?
These measures are terracing of land, contour cultivation and construction of bunds to check the flow of water. Besides, appropriate trees should be planted in all possible and even impossible areas.
D. Answer the following questions in about 125 words each:
Why does the writer compare water with elixir?
Elixir is an imaginary liquid which is supposed to confer immortality on man. The writer compares water with elixir because water plays a very important role in sustaining life on this planet. Water is the basis of all animal and plant life on the earth. There is a substantial quantity of water in the body of every animal. In the same way, sufficient moisture in the soil is necessary for vegetation. No physiological activity is possible without water. It also gives beauty to the landscape. It has amazing powers. It has shaped the course of the earth’s history. Life cannot even be imagined in the absence of water. So keeping all these facts in mind, the writer compares water with the elixir.
Why is water conservation necessary for our country?
OR (rbse 12th english solutions chapter 1 water)
What major steps can be taken in order to conserve water? (Sample Paper 2018)
No agricultural and physiological activity is possible without water. India is primarily
an agricultural country. Ours is mainly an agriculture-based economy. Agriculture in India depends on seasonal rainfall. Often the rain is inadequate or irregular so agriculture suffers badly. If water is conserved, it will prove very valuable for irrigation and power production. Conserved water will directly help in irrigation, and the electricity produced by water will also help in irrigation by tapping underground water through tube wells etc. Conservation of water is necessary in order to keep life going during the period when there is very little or no rainfall. Vast areas of scrubland can be turned into fertile fields with proper use of water. Hence, water conservation is necessary for our country.
Water is the basis of life. Elaborate with reference to human, animal and plant life.
Every human being, every animal and every plant contains a substantial proportion of free or combined water in its body. No kind of physiological activity is possible in which water does not play an essential part. Water is necessary for human as well as animal life to let it go on. The same way, moisture in the soil is equally necessary for the life and growth of plants. Thus water is the basis of life both directly and indirectly. All types of vegetation need water to grow and to flourish. Then all animals drink water and also take it in the form of plants as their food. So it happens with all humans. They also can’t live without water. Besides, they take in the water when they eat plants as their food.
What are the major uses of water for the development of modern age?
Water is no doubt the elixir of life as it is essential to sustain all kinds of plant, animal and human life. Along with this life-giving quality, water has great potential as a means of development of modern age. The harnessing of water supplies makes possible the development of hydroelectric power. The availability of electric power makes a big difference in the quality of life. It enables the economy to be improved in various directions. In particular, it enables underground water to be tapped to a great extent. Water also provides the cheapest form of transport by boats and barges within a country. This type of transport is not only cheap but also good for the environment as it does not cause any kind of environmental pollution. Thus water is very useful for the development of modern age.
RBSE Class 12 English Rainbow Chapter 1 Water Additional Questions
A. Answer the following questions in 30-40 words each:
What happens when silt-laden water gets mixed with the salt water of the sea?
When the silt-laden water of the river mixes with the salt water of the sea, rapid precipitation of the suspended matter takes place. And we see the water changing colour.
What are the beneficent and destructive roles of the flow of water?
The flow of water can bring silt to form fertile land which is beneficial for mankind. It can also cause soil erosion and thus destroy agriculture. These are respectively beneficent and destructive roles of the flow of water.
What are the measures suggested to check soil erosion?
The measures suggested checking soil erosion are terracing of land, the construction of bunds to check the flow of water, the practice of contour cultivation, and the planting of appropriate vegetation.
Question 4. (RBSE 12th English solutions)
‘Water is the basis of life’- how?
All animals, human beings and plants contain a substantial proportion of water in some of the other form. No physiological and agricultural activity is possible without water. Thus water is the basis of life.
Why is the collection and utilisation of rainwater vitally important?
Much of rainwater flows down into the sea. A large amount of rainwater flows waste and cause soil erosion. So we need to collect it wisely to provide water to all and to check soil erosion. Therefore its collection and utilisation are vitally important for a country’s economy.
Why is systematic planting one of the most urgent needs of India?
The systematic planting of suitable trees in every possible place is one of the urgent needs of India because they would prevent soil erosion and conserve rainwater of the country from flowing away to waste.
Question 7. (RBSE Solutions)
What is a great national problem in India? And how can it be solved?
The harnessing of our rivers is a great national problem because the water of these rivers now mostly runs to waste. Vast areas of land can be turned into fertile ones by well-planned action.
What makes Indian agriculture insecure?
Much of Indian agriculture depends on seasonal rainfall. Apart from artesian water, the ultimate source in all cases is rain. So inadequate or irregular rainfall makes Indian agriculture insecure.
How does the water in rain-fed tanks get its colour?
Water has the power to carry silt or finely divided soil in suspension. This silt gives water its colour in rain-fed tanks. These tanks contain water that is mixed with silt.
What, according to the writer, is the real elixir of life?
Elixir is an imaginary drink supposed to confer immortality on man. But according to the author, ‘water’ is the real elixir of life due to its miraculous properties. We cannot imagine life without water.
What does the writer mean by civilized forests? Mention any one advantage of civilized forests.
Civilized forests ( Rbse 12th English chapter 1 Water )
By civilized forests the writer means man-made forests or jungles, forests planted and controlled by man, in other words, systematic planting of suitable trees. One advantage is that they would check soil erosion.
How will planting of suitable trees help in providing a source of wealth to the country?
Trees provide a number of products that help a country’s economy grow. Planting of suitable trees will turn vast areas of land into fertile ones which will help in providing a source of wealth to the country.
B. Answer the following questions in about 125 words each :
Water is the commonest and the most uncommon of all liquids-discuss.
Water is the commonest of all liquids. It is also the most easily available liquid. It is present in all humans, animals and plants in a substantial quantity. This makes it a very common liquid. It is also the most uncommon of all liquids due to its life-giving amazing properties. No physiological activity is possible without water. Water also gives beauty to the landscape and means to live. Life on the earth cannot be imagined without water. To prove this fact C. V. Raman gives us an example of two important geographical regions side by side in the North African Continent – the Lybian Desert where no life is seen, and the Valley of Nile which is full of life. This wonderful difference is just because of water.
What are the various measures suggested to check soil erosion and why? (S. S. Exam 2018)
Soil erosion is the situation when the upper layer of ground is washed away. This is a very serious situation as it leaves the land unfertile as well as unfit for vegetation to grow. Main causes of soil erosion- sudden bursts of excessively heavy rain, the slope of the land, removal of a natural protective coat of vegetation, the existence of ruts (deep tracks) along which water can flow rapidly, and the absence of any checks of such flow. Preventive measures-terracing of the land, construction of bunds to check the flow of water, contour cultivation, and the planting of appropriate trees. These measures are to be taken into practice to save environment to enhance cultivation as well as to help our economy to grow.
Why does the writer say that the study of the nature and properties of water still have plenty of scope for scientific research?
What major steps can be taken in order to conserve water?
Water is the real elixir of life. All humans, animals and plants have a substantial quantity of water in their bodies. No physiological activity is possible without water. Water is essential for all types of life to survive. Sufficient quantity of moisture is essential in the soil for the vegetation to grow and survive. Life on the earth cannot even be imagined without water. It has played a very significant role in shaping the course of the earth’s history. It is the commonest of all liquids. But it is also the most uncommon by virtue of its amazing properties which are responsible for its unique power to maintain life on the earth. Therefore the writer says that scientific research must address these properties of water more and more.
Activity 2: Composition
Rajasthan has a vast stretch of desert. What are the major causes of soil erosion and how can it be checked? Based on the above clues, write an article for the Indian Express on Soil Conservation.
Soil Conservation Rajasthan has a vast stretch of desert. Most of the land is devoid of the plantation, soil erosion is a very common phenomenon. The soil is bare, the wind picks up speed due to the flat land and blows away the unprotected soil. Even though rain falls infrequently in Rajasthan; when it does rain, it causes a large run of surplus water that washes away the top layer of the soil as we saw during the rainy season of 2017 in some parts of Rajasthan. The flood in Pali, Jalore and Rajsamand etc. caused a lot of soil erosion, The best step in the direction of soil conservation is planting appropriate trees. The construction of bunds to check the flow of water will also prove helpful.
What is the role of CAZRI (Central Arid Zone Research Institute, Jodhpur) in checking the expanding desert in our state?
Answer: (RBSE Solutions)
CAZRI, located at the headquarters in Jodhpur works under Indian Council of Agricultural Research, New Delhi. It works in the direction of improving the fertility level of the soil so that its moisture holding capacity may be enhanced. It also works to increase plant cover, to increase productivity and conserve water. New agricultural techniques have been developed. Land degradation is discouraged and efforts are on to increase groundwater level by using rainwater. It had succeeded in its efforts by increasing forest cover, agricultural development in desert areas and providing new techniques to the inhabitants of desert to face severe drought. All these efforts will certainly bear fruit in the direction of checking the growing desert in our state.
Atal Bihari Vajpai planned to connect rivers of India which C.V. Raman also mentions in this essay. How will the project benefit India?
At present most of the Indian rivers are flooded during the rainy season and a large amount of water runs to waste. These very rivers run almost dry during summer. So if the rivers are linked, surplus rainwater may be utilized and will help to develop the country in many ways. Interlinking of all the national rivers project aims at increasing the amount of surface water and eradicating the usage of groundwater for irrigation. This will also increase the arable area. Crop productivity will improve and food availability will increase. More agriculture will provide jobs to many a youth and resultantly improve the economy of the country. These rivers can also be used as waterways that are a cheap mode of transport.
Delta formation takes place in most of the rivers in India. How does it affect the agriculture productivity and life of human beings in those areas?
A river delta is a landform that is formed from the deposition of sediment carried by a river as the river enters an ocean or some other water body. Deltas being home to very fertile soil are a boon to agriculture. Agricultural productivity is very high and of very good quality in such areas. India being an agricultural country, good agriculture means an improvement in the quality of life of the people. People in such areas get good employment and resultantly a better quality of life. In India deltas of the Ganga, the Mahadevi and the Krishna are the most populated and flourished areas. Rich fertile soil here has opened doors of prosperity here.
What are our daily activities in which we need water from dawn to dusk? How can we save water and how much water can be saved in a month in a family if we use it carefully? Make a chart and calculate?
Everyday we use water in cleaning our body, cleaning our house and washing our clothes, for drinking, for cooking, for washing dishes, for watering plants, etc. We can save this important liquid by being careful in our daily activities as we can see in this chart: Activity Careful use
Thus we can save 27 litres of water every day.
For more RBSE Solutions follow on (Google News).