Transcription
Hello, welcome dear students and dear friends. A warm welcome to all of you here. Under Amy and My Two Class, I, Bharat Kumar, have brought an important class for you, which is most essential for your exams. Here we are going to talk about the upcoming Sixth Semester exam for Geography, which is Economic Geography. In this important class, we will complete Unit Third. Unit Third, just call this the Brahmastra Class. So, this is Brahmastra Class Number Third, where we are going to complete Unit Third. Therefore, please note it down carefully, understand it, and prepare yourself before the exam. So, all those who have joined live, a most welcome to everyone, good morning to all of you. So, let's talk about the Third Unit. To start with the Third Unit, please note it down carefully. What I am going to explain to you here. See, our Third Unit, meaning Unit Third. If I talk about Unit Third, dear students, then please note it down because in Unit Third, we are studying Minerals and Minerals, Minerals and Energy Sources and Energy Resources. So, this is our topic. This is our Unit Third, which I am going to complete entirely in this one class, covering this entire topic. Clear, dear? So, let's talk about iron ore first. About what will we study? We will study iron ore, which is most important for your exam. Please note down about iron ore. See, if we talk about its pure form, iron is never found in its pure form in nature. It is a part of rocks, and other impurities like soil, gold, sulfur, and various other things are mixed within it. When we search for or mine iron, or when it is mined, this raw iron is called iron ore. When iron is not found in a pure form. Like, whatever items we see, they don't come out just like that. No, they come out mixed. That is, many things are mixed, which is called iron ore. Now, let's talk about its industrial importance. It is melted in a blast furnace, a hot furnace where it is separated by boiling. Then, along with coke and limestone, it is melted to obtain pure iron, and then steel is made. So, this is how it happens within its process. Next, let's talk about the types of iron ore. What are the types of iron ore? A two-mark question can come. So, please see, because one is Magnetite. This is the best grade of coal. If we talk about the percentage of iron content, the purest iron content is the highest, 70 to 72%. If it is a type of Hematite iron, then the iron content is 70 to 72%. Talking about its color and characteristics, its color is deep black, and it has natural magnetic properties. Therefore, it is called Magnetite. What is it called? Magnetite. And talking about its use, it is very hard and of excellent quality, used in high-quality electrical equipment and industries. Next, let's talk about the second type, which is Hematite. Now, Hematite is used the most for industrial purposes because if we talk about the iron content, 60 to 70% iron ore is found in it. And talking about its color and characteristics, its color is reddish-brown, but it is also called red ore because if we talk about its use, it is the most mined and used for industrial production worldwide because it is easily available in large quantities, meaning it is available in an easy way. Therefore, its use is also more. Hematite is found. Otherwise, like I talked about the first one, its possibility is very high, it is very important, but the possibility of finding it is very low. Therefore, the third type of iron is Limonite. This is of medium grade because the iron content in it is 40 to 60%. Talking about its color and characteristics, its color is yellow, light brown, meaning yellow. It has a high moisture content. Therefore, it is also called yellow ore. And next, the fourth type of iron is of low grade, Siderite. The iron content in it is only 40% or even less. Even less than that? Okay? In this way, talking about its color and characteristics, its color is ash or gray or gray type, and because of this, it has a high amount of carbon and impurities. It is less profitable economically, so its mining is also less. Next, let's talk about the distribution of iron ore. See, if we talk about iron ore, Australia has the most, as it ranks first in the world. Talking about its position, currently, Australia is considered the world's largest producer and exporter of iron ore. The main region in Australia is the Pilbara region. Here, Mount Tom Price, Mount Newman, and the Hamersley Range have high-grade iron available. Next, let's talk about Brazil. Brazil is second for iron. It is in South America, and it is in second place. It also has huge reserves. For example, Itabira is a whole mountain of iron, famous for high-quality iron. Then there is Carajás. Talking about Carajás, it is the world's largest open-pit mine. Iron is available here. It is a mine. After this, China comes in third place in the field of iron. It also has huge consumption. Talking about its position, China is in third place in production, but due to its heavy industrial demand, it is also the world's largest importer because there is demand, and there is supply. If we talk about the main regions here, then the Mussoorie region, meaning Anshan and Fankui, and the Shandong Peninsula and the Yangtze River valley have iron. Then let's talk about iron in India. India ranks fourth in iron production. So, talking about its position, India has a large amount of very high-quality Hematite and Magnetite iron available. If we talk about India, then it is available in Odisha, Mayurbhanj, Gurumahisani, and Badam Pahar. Besides this, it is also available in Kajra Kiriburu, meaning Kajra in Jharkhand. Talking about Chhattisgarh, the Bailadila mine in Bastar district exports iron to Japan through Visakhapatnam port. Next is Karnataka. In Karnataka, Kudremukh has huge reserves of Magnetite, and in the Baba Budan hills. Talking about Jharkhand, the Singhbhum district, Noamundi mine, is very important regarding iron ore in India. A Political Science class will come this evening. Next, let's talk about Russia and Ukraine. So, Russia has the Kursk Magnetic Anomaly here, which is one of the world's largest magnetic iron reserves. Besides this, the Ural Mountains are also important for iron production here. That is, Ukraine has the Kryvyi Rih region where iron production is mainly done. Now, let's talk briefly, as you can understand mentally here, about the grades of iron I have told you, which iron is found in more quantity where. You can take a screenshot of this because it might come for your exam, so you should know. Clear? So, we have explained iron ore to you briefly and in an easy way. Next, let's talk about Manganese. What will we talk about? Manganese. So, pay attention, this class is for a full 16 marks. For how many marks? 16 marks. Therefore, I am going to teach this class very speedily and rapidly. Manganese is an extremely important polymetallic mineral. It is not found in nature in its free form, but here, it is found in the form of ores like Pyrolusite, Psilomelane, or even Bronite. It is not free. Now, let's talk about its consumption or use. Its use is also at its own level. Because in the iron and steel industry, its biggest use is Manganese. About 90 to 95% of the total manganese produced goes into making steel and iron alone. Talking further, the thumb rule, remember it for the exam, what I am telling you? So, see, to make one ton, meaning 1000 kilograms of steel, about 6 to 10 kilograms of manganese are required. So, the consumption happens here, and it absorbs impurities like sulfur, making it hard. Now, talking about its alloys, when it is mixed with iron, an alloy called ferro-manganese is formed, from which rock-cutting machines and railway tracks are made. So, manganese provides hardness to iron. Next, it is also used in the chemical industry because it is used in bleaching powder, pesticides, dry battery cells, and matches. Besides this, manganese is also used in bronze and porcelain utensils. Because manganese is used to remove the yellowness of glass, to clean it, or to color porcelain utensils. If we talk from here in the same way, then note it down carefully. Clear? Yes, that Manganese is now found worldwide, at what level? So, the most is found in South Africa. South Africa is number one in the world in the field of manganese. Because South Africa is currently important in the production and reserves of manganese, and it is a leader in this matter. Talking about this region, note down the main regions, which are Kuruman and Postmasburg in the Cape Province, where this mineral, manganese, is found. Next, Gabon comes in second place. This is also a small country in the African continent where huge reserves of manganese are found. Australia comes in third place in terms of manganese reserves because it is the most prominent for iron ore. Besides this, China comes in fourth place for manganese. Talking about China, then provinces like Guangxi, Yunnan, and Guizhou are manganese mining areas. Talking about manganese in India, then note it down carefully because India has good reserves of manganese. India fulfills its domestic needs and also exports it to Japan, Eurasia, and Indonesia. So, therefore, note this down regarding manganese reserves. Clear, it is very important. If we talk about manganese reserves in India, then one is Odisha. If we talk about India's leading producing state, then Odisha is it, because there are manganese reserves in Keonjhar, Sundargarh, and Mayurbhanj. Talking about MP, then Balaghat and Chhindwara, where the mines are very deep and rich. Next, manganese reserves are in Nagpur and Bhandara in Maharashtra, where manganese is found in the same belts as in Madhya Pradesh. Besides this, in Karnataka, manganese reserves are found in Shimoga, Chitradurga, and Belgaum. So, manganese is clear? Let's move on. Next, under minerals, there is Copper. What is it? Copper. Note it down. Good morning, everyone. Second Semester English Literacy important questions will be available after this or in the evening, 100% with model papers. Talking about copper, its industrial importance and characteristics. See, copper is an extremely flexible and malleable metallic mineral. It is found in nature in the form of sulfide, oxide, and carbonate ores. If we talk about Chalcopyrite, it is the most prominent ore. The most prominent ore. Clear. If we talk about its main physical properties, it has high electrical conductivity. Because along with silver, copper is the best conductor of electricity. Because silver is very expensive. Therefore, copper is used in making electric wires, generators, transformers, electronics, motors, or computers. Clear. Besides this, it is also used in the manufacturing of alloys. For example, when copper and zinc are mixed, brass is formed. When copper and tin are mixed, bronze is formed. Besides this, copper is also used as a heat conductor because it is a very good conductor of heat. Due to this, it is used in large quantities in refrigerator and air conditioner coils and radiators. Besides this, it also has anti-corrosion properties because copper rusts very slowly, so it is also used in chemical plants, pipelines, and roofing materials. Next, let's talk about copper reserves. So, note it down that Chile has the most copper in the world. The capital of copper can be called so because in it, there is the Sukhumakatta area and El Teniente, where copper reserves are found. Peru comes in second place. Peru, if we talk about Peru, then its mines are found in Antamina and Las Bambas. Next, copper reserves are in third place, with huge consumption. China. If we talk about China, then the provinces of Jiangxi, Gansu, and Yunnan are the most important in this area. Next, the Democratic Republic of Congo also has huge reserves of copper. The main region is the Katanga province. And talking about copper in India, then remember about copper in India because India's copper reserves are comparatively very low. Due to this, India has to import copper from abroad for its needs. But still, if we talk about the Malanjkhand mine in the Balaghat district of MP, it is India's largest open-pit copper mine. About 50% of the country's copper is extracted from here. Besides this, Rajasthan, in the Khetri area of Jhunjhunu district, is famous for prehistoric Indus Valley Civilization mining. Jharkhand is considered important for this. So, note this down because it will be asked which areas are important for copper mines. Clear? You must have taken a screenshot. Okay, let's move on. Next, as an energy resource, there is Coal. Coal as an energy resource. Hello Pooja. Good morning. Good morning. History class, yes, a class will definitely come for everyone. See, coal is a fossil fuel because coal is a solid organic substance, which is a fossil fuel. Millions of years ago, due to geological upheavals, dense marshy forests and vegetation got buried underground, and due to extreme heat and pressure, they slowly turned into coal. This process is called carbonization, how it is formed. Okay? Talking about coal reserves, first, let's talk about its types. Then, see, Anthracite is the best quality coal. If we talk about the carbon content, it contains about 80 to 95% carbon. It is a high-quality coal because its color is deep black, shiny, and hard. Talking about its burning capacity, it does not produce smoke at all when burning. It burns with a blue flame and provides extreme heat. After burning, very little ash is left, and it is a rare but valuable coal. Its availability is slightly less. Similarly, let's talk about the next one. Then, in the second category of coal, there is Bituminous, which is for the most industrial use. If we talk about carbon content, its carbon content is 60 to 80%. Color: This coal, Bituminous, is a medium-hard coal. It is also called domestic coal. Mostly, its general use is done. Because if we talk about it, it produces a little smoke when burning. But its heat-providing capacity is very good. In the world's iron and steel industry, this coal is used. Next, let's talk about Lignite, brown coal. Talking about carbon content, it has 40 to 55% carbon. Its color is brown, and when it burns, the moisture content is high. Due to this, it starts to break easily when exposed to air, and its use is in power plants to generate thermal energy. Then, the third type of coal is Peat. It is the lowest quality, meaning the lowest type. The carbon content is only 40% or even less. And it is used in iron work, or if we talk about the formation of coal, the first stage when coal formation begins, in the first stage, Peat type coal is formed, and if you look closely, the fibers of wood are clearly visible. It looks exactly like it is made of wood, right at the very beginning. It has very high moisture and very low carbon. Next, let's talk about which country is leading in coal worldwide, and which is behind. So, we are also talking about the status of coal. Sir, last year I watched your class, and it was very helpful. So, keep studying and keep moving forward. We are trying our best for you. Now, see, talking about the distribution of coal reserves worldwide, China comes at the top. China comes at the top. And what are the coal regions in China? One is Shanxi, which is important. Second is Sichuan. Besides this, Fuxin. These are huge coal reserves in China. India comes in second place in the world for coal reserves because India's coal production is in second place worldwide. Most of India's coal is obtained from Gondwana period rocks. It is mainly of Bituminous type. If we talk about coal regions in India, then in Rajasthan, in our India, what are the regions for coal? So, one is Jharkhand. Jharkhand's Jharia, the mining area, is the most important for coking coal. Bokaro and others are also there. Next is the Raniganj region in West Bengal for coal. In Odisha, the Talcher region. In Chhattisgarh, Korba. Talking about Tamil Nadu, Neyveli. Along with this, the United States of America comes in third place in coal production worldwide. So, the US also has huge coal reserves. For example, the Appalachian region has the most famous and rich Bituminous type coal in the world. Next are the Illinois Basin and the Rocky Mountains. These are also there. In fourth place for coal reserves is Russia. So, talking about Russia, the Kutz Basin region, located in Western Siberia, has coal reserves. In fifth place are major European regions, such as the Ruhr region in Germany and Khara, where it is found. Talking about the United Kingdom, there are huge reserves of coal in Yorkshire and Newcastle. Clear? So, take a screenshot. This is the summary of everything taught. Let's move on. Next, the energy resource is Petroleum. Petroleum. The word petroleum is made up of two Latin words: Petro plus, remember, rock. That is, here, remember Petro is rock, and Oleum. It is made of these two words, Petrolum. Its meaning is oil derived from rocks. Meaning, oil derived from rocks. Now, let's talk about fossil fuels and sedimentary rocks. See, millions of years ago, microorganisms and vegetation living in the sea and lakes got buried under the seabed and the earth. Then, due to extreme chemical reactions, temperature, and pressure, they turned into hydrocarbons. Therefore, crude oil is always found in sedimentary layered rocks. Now, let's talk about its products. During the refining of crude oil in refineries, not only petrol or diesel is obtained, but also gasoline, kerosene, asphalt, wax, plastics, and raw materials for making chemical fertilizers are obtained along with petroleum. Next, let's talk about the distribution of petroleum. Worldwide, the first place is occupied by the Gulf countries. You know the Gulf countries, right? Saudi Arabia, Iran, Arab, and then Saudi Arabia is the leader among the Gulf countries. The Ghavar field here is...
The world's largest oil producer is called. Next, let's talk about besides this, look at countries like Iraq. Iraq, Iran, Kuwait, United Arab Emirates. You know, there was a petroleum dispute between America and Iran recently, and there was a great scarcity of petroleum because the petroleum reserves are located here. Next, in second place is America. Speaking of America, it also ranks among the top in petroleum because there are petroleum reserves in Texas and Gulf Coast. Its rich cosmetic region is also there, like Oklahoma and Kansas region. Speaking of the Khalska region, there are oil reserves in Prudhoe in the northern slope. Then Russia, which is the oil reserve of Eurasia, meaning Europe. Speaking of this, within Russia, the Volga-Ural region, the Western Siberian Basin region, Sakhalin Island are for oil reserves. And Venezuela has the largest paper reserves in this region because here, speaking of the Orinoco Belt and Lake Maracaibo are famous for this. Next, let's talk about oil reserves in India. Make a very important note because India imports about 80 to 85% of its needs from abroad. However, there are also some oil-producing regions domestically. Like Bombay High, located 176 km away in the Arabian Sea from Bombay, is India's largest offshore oil field, where it is also called Sagar Samrat. Next is Rajasthan, Barmer, Mangala, Bhagyam, Aishwarya oil fields are important in domestic production. Besides this, 10 refineries have also been inaugurated recently. In Assam, there is Digboi because it is Asia's oldest operating oil well, which has been producing oil since 1989. Then there is Naharkatiya. Then there is Gujarat. Gujarat's Ankleshwar is also important in oil production. Now take a screenshot, it is important for you in short. Then let's talk about the economic production of hydroelectricity. The next production, our energy source and resource, is hydroelectric energy, which is also called renewable energy because water power is an inexhaustible renewable form. Its energy is always flowing. In a way, it is said that it does not cause pollution. So, through the water cycle, there is always water and energy keeps coming, and it is also environmentally friendly. Along with this, speaking of hydroelectric projects, various types of objectives are fulfilled because the dams built for hydroelectricity do not just generate electricity but also control water for irrigation, fisheries, and tourism. Now, what conditions should be met for the development of hydroelectricity so that hydroelectric production can occur? For this, the most important thing is perennial rivers, meaning there should be sufficient water all the time. Water should come anytime, so production will also be good. Meaning, if there is water all the time in perennial rivers, then electricity will be generated continuously. Next is three falls. Meaning, there are waterfalls like this. If there are many waterfalls in India and water keeps flowing continuously, then water falls from above onto the turbine, and electricity is generated. So, the best thing is that there should be large waterfalls that help in electricity generation from water because water is made to fall on the turbine. Then, a feature in winter is that for electricity, it should not freeze in winter, otherwise, there will be problems with electricity. Dense industrial. Besides this, there should be demand for electricity. Electricity can be produced, but if there is no demand for electricity, then there is no point. Therefore, electricity demand is necessary, and there is heavy capital investment and technology. So, all these things are necessary. Only then is electricity production at the top level. Let's talk further, who is at the top in the world in the field of hydroelectricity in terms of production? So, China is the world's largest hydroelectric producer. Big projects are running. Then comes Brazil and Paraguay in second place. In fourth place are the United States and Canada in hydroelectricity, and in third and fourth place are Sweden and Norway. Similarly, let's talk about hydroelectricity in India because multipurpose projects have been built for hydroelectricity in India. Hydroelectricity from multipurpose projects. Because, if we look at it, India has vast potential for hydroelectricity, which originates from the Himalayas. Where does it originate? It originates from the Himalayas. Clear? Please hold for two minutes. Yes. So, due to technical problems, the class also stopped here. But I am back live in front of you, and we were talking about hydroelectricity, which is an energy resource. Hydroelectricity, which is an energy resource, we were talking about it. So, in terms of hydroelectricity in India, India ranks fifth in hydroelectric resource. In what number does it rank? It ranks fifth. Speaking of hydroelectric power here, the energy needs are met through various multipurpose projects, like the Bhakra Nangal Project. The Bhakra Nangal Project is India's most popular project because it is located on the Punjab-Himachal border on the Sutlej River, and it is India's largest initial project that is operational. The second important project related to hydroelectricity is the Tehri Dam Project, which is on the Bhagirathi River in Uttarakhand, and here is India's tallest dam, which is Tehri. So, you should note this well that hydroelectricity is available in India as an energy resource. Now, let's talk briefly. For hydroelectricity, China is at the top, where the Three Gorges Dam is built on the Jaksing River, which is the world's largest hydroelectric power plant. In second place is Brazil, where the Itaipu Dam is built on the Paraná River, which is the largest hydroelectric energy source in South America. Then in the USA, there are the Grand Coulee and Hoover dams on the Columbia River. It is the main power in the industrial lake region in the west. And speaking of India, the Tehri Dam and Bhakra Nangal Dam are on the Bhagirathi and Sutlej rivers, and this is the largest reserve of hydroelectricity from Himalayan rivers found in India. Next, after water resource, the final resource that fulfills energy needs is nuclear energy. Let's look at the conceptual background and science of nuclear energy. Speaking of the basic principle, nuclear energy is not a traditional fuel. It is a newly discovered energy source. Because it is based on the process of nuclear fission of the nuclei of heavy elements. When neutrons are bombarded on the nuclei of Uranium and Thorium, they break and provide a large amount of heat energy through a controlled chain reaction. This heat is used to boil water, create steam, which rotates turbines to generate electricity. Therefore, note this. Let's talk further, highly organized energy is obtained. Look, 1 gram of Uranium provides approximately 2.7 tons, or 2700 kilograms, of high-quality coal, meaning the transportation cost is almost zero. So much energy is obtained without burning coal. And pollution is also less. This is nuclear energy from which electrical energy is obtained. What raw materials are needed for nuclear energy production? So, to run a nuclear reactor, mainly two radioactive minerals are required. First, Uranium, which is called Yellowcake. Its specialty is that it is the main engine of nuclear energy, and in commercial language, refined Uranium is called Yellowcake. Its main ores are Pitchblende. Remember, the ore of Uranium is Pitchblende and Uraninite. Besides this, speaking of global reserves, Kazakhstan, Canada, Australia are the world's largest producers and have stored reserves of Uranium. The second production in generating electricity from nuclear energy is Thorium. Because, speaking of its specialty, it is available in nature in larger quantities compared to Uranium. However, the technology for generating electricity from it is a bit complex. Speaking of India, India is its pride. India also possesses the world's largest Thorium reserves. It is found in sufficient quantities in monazite sand on the coastal parts of Kerala. Now let's talk about the global distribution of nuclear energy. Where is more nuclear power in the world from which energy is obtained? So, the most important comes next, America, in the first place. Because the USA is the country that generates the most electricity from nuclear energy in the world. It has more than 90 active nuclear reactors, which produce 20% of the country's total electricity. Like Illinois, Pennsylvania, Southeast. Besides this, next, in second place is France, which is the most dependent country on nuclear energy. It produces about 70% of its electricity needs from nuclear power. In third place is China, which is rapidly advancing in terms of growth rate. In fourth place, Japan generates electricity from nuclear energy. And speaking of India, India is also producing electricity from nuclear power through a three-stage nuclear program. Like India's great scientist Dr. Homi Jahangir Bhabha laid the framework for India's three-stage nuclear energy program, whose ultimate goal was to utilize India's vast thorium reserves. So, if questions come in the exam regarding India's major nuclear energy and mines and their సంబంధిత, remember this is very, very important: the major plants generating electricity from nuclear energy in India are Tarapur in Maharashtra. This is India's largest, first, and largest commercial nuclear power station, established in 1969. Second is Rawatbhata, which is in Rajasthan. It is located near the Rana Pratap Sagar Dam in Chittorgarh district. It was established with the cooperation of Canada. Then there is Kudankulam. In Tamil Nadu, Kudankulam is India's most modern and high-capacity nuclear plant with technical assistance from Russia. Then there is Kaiga. Kaiga is the nuclear power plant in South India, located in Karnataka. And Narora is located in Uttar Pradesh, in Bulandshahr district, near the banks of the Ganges River. And next are Kakrapar in Gujarat and Kalpakkam in Tamil Nadu, which are paramount in energy production. Hello, good morning. Yes, everyone. So, my dear students, if you talk about this, then note down who is at the top in generating electricity from nuclear energy. The United States. Then France, India, and Kazakhstan. Now, pay attention here to which important facts can come, which are important, all of them will be found in this entire class. Even though I may have taught this class at a fast pace, remember, if someone watches this class again and again, I guarantee that a question from this class has never gone out, and it never will. That's why I would want you to study this class from your heart. After this class, the next Brahmastra class you will get will be Unit Four, Five, or it might be a one-shot class. We will bring the next important class for you according to your demand. English Literature one-shot class, the exam is on the 16th. Don't worry. I have already prepared a very good model paper for English. Due to lack of time, I am not able to do it live yet. Maybe in the evening, in the evening, the work of second, fourth, and sixth semesters of English Literature will be finished in one class. So, dear students, tell your friends that the upcoming class and the one that is coming should be watched carefully. See you in the next important class. Until then, take care. Jai Hind, Jai Bharat.