{"id":13687,"date":"2020-10-19T14:16:20","date_gmt":"2020-10-19T08:46:20","guid":{"rendered":"https:\/\/ncertsolutions.guru\/?p=13687"},"modified":"2020-10-19T14:16:20","modified_gmt":"2020-10-19T08:46:20","slug":"class-8-geography-chapter-3-extra-questions","status":"publish","type":"post","link":"https:\/\/ncertsolutions.guru\/class-8-geography-chapter-3-extra-questions\/","title":{"rendered":"Class 8 Geography Chapter 3 Extra Questions and Answers Mineral and Power Resources"},"content":{"rendered":"

Make your learning experience enjoyable by preparing from the Class 8 Geography Chapter 3 Extra Questions and Answers Answers Mineral and Power Resources available on this page. All the Solutions are covered as per the latest syllabus guidelines. Knowing the Answers to the Extra Questions for Class 8 Social Science<\/a> Geography Chapter 3 Answers Mineral and Power Resources helps students to attempt the exam with confidence.<\/p>\n

NCERT Solutions for Class 8 Geography Chapter 3 Extra Questions Answers Mineral and Power Resources<\/h3>\n

Extra Questions for Class 8 Geography Chapter 3 Extra Questions and Answers Mineral and Power Resources<\/strong><\/p>\n

NCERT Class 8 Geography Chapter 3 Extra Questions Very Short Answers Type<\/h3>\n

Question 1.
\nMention the physical properties of minerals.
\nAnswer:
\nColour, density and hardness.<\/p>\n

\"Class<\/p>\n

Question 2.
\nWrite any one chemical property of minerals.
\nAnswer:
\nSolubility.<\/p>\n

Question 3.
\nClassify the minerals on the basis of composition.
\nAnswer:
\nMetallic and non-metallic.<\/p>\n

Question 4.
\nInto which two types can metallic minerals be divided.
\nAnswer:
\n(i) Ferrous
\n(ii) Non-ferrous.<\/p>\n

Question 5.
\nHow are minerals extracted?
\nAnswer:
\nMinerals are extracted by mining, drilling or quarrying.<\/p>\n

Question 6.
\nWhich continent produces more than half of the world\u2019s tin?
\nAnswer:
\nAsia.<\/p>\n

Question 7.
\nWhich countries are the leading producers of tin in the world?
\nAnswer:
\nChina, Malaysia and Indonesia.<\/p>\n

\"Class<\/p>\n

Question 8.
\nWhich country is the largest producer of high grade iron-ore?
\nAnswer:
\nBrazil.<\/p>\n

Question 9.
\nWhich countries of South America are the leading producers of copper 7
\nAnswer:
\nChile and Peru.<\/p>\n

Question 10.
\nWhich countries of South America are the world\u2019s largest producers of tin?
\nAnswer:
\nBrazil and Bolivia.<\/p>\n

Question 11.
\nWhich two areas of Australia are rich in gold deposits?
\nAnswer:
\nKalgoorlie and Coolgardie.<\/p>\n

Question 12.
\nWhich country is the largest producer and exporter of mica in the world?
\nAnswer:
\nIndia.<\/p>\n

Question 13.
\nIn which part of India deposits of gold are found?
\nAnswer:
\nKolar in Karnataka.<\/p>\n

Question 14.
\nWhich minerals are obtained from quartz and bauxite?
\nAnswer:
\nMineral obtained from quartz is silicon and aluminium from bauxite.<\/p>\n

Question 15.
\nInto which two categories can power resources be classified?
\nAnswer:
\nConventional and non-conventional resources.<\/p>\n

\"Class<\/p>\n

Question 16.
\nName two main conventional energy sources.
\nAnswer:
\nFirewood and fossil fuels.<\/p>\n

Question 17.
\nGive two examples of fossil fuels.
\nAnswer:
\nCoal, petroleum.<\/p>\n

Question 18.
\nHow is wind energy generated?
\nAnswer:
\nThe high speed winds rotate the windmill which is connected to a generator to produce electricity.<\/p>\n

Question 19.
\nName the greatest producers of nuclear power in the world. \u00bb
\nAnswer:
\nUSA and Europe.<\/p>\n

Question 20.
\nWhere do geothermal plants are located in India?
\nAnswer:
\n(i) Manikaran in Himachal Pradesh
\n(ii) Puga Valley in Ladakh.<\/p>\n

\"Class<\/p>\n

Question 21.
\nWhich type of resources are coal and petroleum?
\nAnswer:
\nNon-renewable.<\/p>\n

NCERT Class 8 Geography Chapter 3 Extra Questions Short Answers Type<\/h3>\n

Question 22.
\nWhat are minerals? How do they form?
\nAnswer:
\nA naturally occurring substance that has a definite chemical composition is a mineral. They are formed in different types of geological environments under varying conditions.<\/p>\n

Question 23.
\nWrite two characteristics of metals.
\nAnswer:
\n(i) Metals are hard substances that conduct heat and electricity.
\n(ii) They have a characteristic lustre or shine. For example, iron, aluminium, copper, etc.<\/p>\n

Question 24.
\nDistinguish between open-cast mining and shaft mining.
\nAnswer:<\/p>\n

    \n
  1. Open-cast mining: When minerals lie at shallow depths, they are taken out by removing the surface layer. This is called open-cast mining.<\/li>\n
  2. Shaft mining: When minerals lie at the great depth deep bores, are made to extract. This is called shaft mining.<\/li>\n<\/ol>\n

    \"Class<\/p>\n

    Question 25.
    \nCertain minerals are found in igneous and metamorphic rocks. Give three such examples.
    \nAnswer:<\/p>\n

      \n
    1. Iron-ore in north Sweden.<\/li>\n
    2. Copper and nickel in Ofitario, Canada.<\/li>\n
    3. Iron, nickel, chromites and platinum in South Africa.<\/li>\n<\/ol>\n

      Question 26.
      \nName the minerals found in sedimentary rocks along with their location.
      \nAnswer:<\/p>\n

        \n
      1. Limestone in Caucasus region of France.<\/li>\n
      2. Manganese deposits of Georgia and Ukraine.<\/li>\n
      3. Phosphate beds of Algeria.<\/li>\n<\/ol>\n

        Question 27.
        \nName the minerals found in Europe.
        \nAnswer:
        \n(i) Iron-ore is found in Russia, Ukraine, Sweden and France.
        \n(ii) Copper, lead, zinc, manganese and nickel are found in eastern Europe and European Russia.<\/p>\n

        Question 28.
        \nMention the three zones of North America where mineral deposits are located.
        \nAnswer:
        \n(i) The Canadian region north of the Great Lakes.
        \n(ii) The Appalachian region.
        \n(iii) The mountain ranges of the West.<\/p>\n

        Question 29.
        \nName the four countries of South America where mineral oil is found.
        \nAnswer:<\/p>\n

          \n
        1. Venezuela,<\/li>\n
        2. Argentina,<\/li>\n
        3. Chile,<\/li>\n
        4. Peru,<\/li>\n
        5. Columbia.<\/li>\n<\/ol>\n

          Question 30.
          \nWrite the minerals which have been predicted to be found in Antarctica.
          \nAnswer:<\/p>\n

            \n
          1. Deposits of coal in the Trans-Antarctic Mountains.<\/li>\n
          2. Iron near the Prince Charles Mountains of East Antarctica.<\/li>\n
          3. Iron-ore, gold, silver and oil are also present.<\/li>\n<\/ol>\n

            \"Class<\/p>\n

            Question 31.
            \nWhere is iron found in India?
            \nAnswer:
            \nJharkhand, Orissa, Chhattisgarh, Madhya Pradesh, Goa, Maharashtra and Karnataka.<\/p>\n

            Question 32.
            \nIn which states of India is bauxite found?
            \nAnswer:
            \nJharkhand, Orissa, Chhattisgarh, Madhya Pradesh, Gujarat, Maharashtra and Tamil Nadu.<\/p>\n

            Question 33.
            \nWrite two advantages and disadvantages of petroleum.
            \nAnswer:
            \nAdvantages of petroleum:
            \n(i) It is easier to transport.
            \n(ii) It is the basis of petro-chemical industry.<\/p>\n

            Disadvantages of petroleum:
            \n(i) Oxygen gets depleted due to oil spillage and gas leakage.
            \n(ii) Pollutants released while burning, cause acid rain.<\/p>\n

            Question 34.
            \nWrite two advantages and disadvantages of firewood.
            \nAnswer:
            \nAdvantages of firewood:
            \n(i) It is easily accessible.
            \n(ii) It provides energy to a large number of people.<\/p>\n

            Disadvantages of firewood:
            \n(i) Collection of fire-wood is time-consuming.
            \n(ii) It causes air pollution.<\/p>\n

            Question 35.
            \nWrite two merits and demerits of coal.
            \nAnswer:
            \nAdvantages of coal:
            \n(i) It is extensively available.
            \n(ii) It can efficiently be converted into electricity.<\/p>\n

            Disadvantages of coal:
            \n(i) It pollutes the environment.
            \n(ii) It is bulky to transport.<\/p>\n

            Question 36.
            \nHow are fossil fuels formed?
            \nAnswer:
            \nRemains of plants and animals which are buried under the earth for millions of years get converted by the heat and pressure into the fossil fuels.<\/p>\n

            \"Class<\/p>\n

            Question 37.
            \nWrite four uses of coal.
            \nAnswer:
            \n(i) It is used as a domestic fuel.
            \n(ii) It is used in industries such as iron and steel industry, brick industry etc.
            \n(iii) Coal is used to run steam engines.
            \n(iv) It is used to generate electricity.<\/p>\n

            Question 38.
            \nWhy is coal referred to as Buried Sunshine?
            \nAnswer:
            \nThe coal was formed millions of years ago when giant ferns and swamps got buried under the layer of the earth. Therefore, coal is referred to as Buried Sunshine.<\/p>\n

            Question 39.
            \nName four coal producing countries of the world.
            \nAnswer:
            \n(i) China,
            \n(ii) USA,
            \n(iii) Germany,
            \n(iv) Russia,
            \n(v) South Africa,
            \n(vi) France.<\/p>\n

            Question 49.
            \nName the major coal-producing areas of India.
            \nAnswer:
            \nRaniganj, Jharia, Dhanbad and Bokaro.<\/p>\n

            Question 41.
            \nName the products produced from crude oil.
            \nAnswer:
            \nDiesel, petrol, kerosene, wax, plastics and lubricants.<\/p>\n

            Question 42.
            \nName the chief petroleum-producing countries.
            \nAnswer:
            \nIran, Iraq, Saudi Arabia, Qatar, USA, Russia, Venezuela and Algeria.<\/p>\n

            Question 43.
            \nName the leading oil producer states of India.
            \nAnswer:
            \n(i) Digboi in Assam.
            \n(ii) Bombay High in Mumbai.
            \n(iii) Deltas of Krishna and Godavari rivers.<\/p>\n

            Question 44.
            \nWhere is natural gas found in India?
            \nAnswer:
            \n(i) Jaisalmer
            \n(ii) Krishna-Godavari .delta
            \n(iii) Tripura
            \n(iv) Offshore in Mumbai<\/p>\n

            \"Class<\/p>\n

            Question 45.
            \nName the leading producers of hydel power in the world.
            \nAnswer:
            \nParaguay, Norway, Brazil and China.<\/p>\n

            Question 46.
            \nWrite the advantages and disadvantages of solar energy.
            \nAnswer:
            \nAdvantages of solar energy
            \n(i) It is inexhaustible.
            \n(ii) It does not cause pollution.<\/p>\n

            Disadvantage of solar energy.
            \nThe method of extracting solar energy is costly.<\/p>\n

            Question 47.
            \nWrite one advantage and disadvantage of each tidal and nuclear energy.
            \nAnswer:
            \nTidal energy – Advantage – It is non-polluting and inexhaustible.
            \nDisadvantage – It destroys wildlife habitat. It is also difficult to harness tidal energy.
            \nNuclear energy – Advantage – It emits large amount of energy.
            \nDisadvantage – It generates radioactive wastes.<\/p>\n

            Question 48.
            \nWrite the uses of solar energy.
            \nAnswer:
            \n(i) Solar energy is used in solar heaters, solar cookers, solar dryers.
            \n(ii) It is also used for community lighting and traffic signals.<\/p>\n

            Question 49.
            \nName the countries which are noted for their wind energy production.
            \nAnswer:
            \nNetherlands, Germany, Denmark, UK, USA and Spain are noted for their wind energy production.<\/p>\n

            Question 50.
            \nHow is nuclear power generated?
            \nAnswer:
            \nNuclear power is obtained from energy stored in the nuclei of atoms of radioactive elements like uranium and thorium. These fuels undergo nuclear fission in nuclear reactors and emit power.<\/p>\n

            \"Class<\/p>\n

            Question 51.
            \nIn which states of India are deposits of uranium and thorium found?
            \nAnswer:
            \nUranium is found in Rajasthan and Jharkhand. Thorium is found in the monozite sands of Kerala.<\/p>\n

            Question 52.
            \nName four hydel power stations of India.
            \nAnswer:<\/p>\n

              \n
            1. Bhakra Nangal<\/li>\n
            2. Gandhi Sagar<\/li>\n
            3. Nagarjuna Sagar<\/li>\n
            4. Damodar Valley<\/li>\n<\/ol>\n

              Question 53.
              \nMention the major nuclear power stations of India.
              \nAnswer:<\/p>\n

                \n
              1. Kalpakkam in Tamil Nadu<\/li>\n
              2. Tarapur in Maharashtra<\/li>\n
              3. Rana Pratap Sagar near Kota in Rajasthan<\/li>\n
              4. Narora in Uttar Pradesh<\/li>\n
              5. Kaiga in Karnataka.<\/li>\n<\/ol>\n

                Question 54.
                \nWrite the uses of geothermal energy.
                \nAnswer:
                \nGeothermal energy in the form of hot springs is used for cooking, heating and bathing.<\/p>\n

                Question 55.
                \nName the countries where geothermal plants are located.
                \nAnswer:<\/p>\n

                  \n
                1. USA has the world\u2019s largest geothermal power plant.<\/li>\n
                2. New Zealand<\/li>\n
                3. Iceland<\/li>\n
                4. Philippines<\/li>\n
                5. Central America.<\/li>\n<\/ol>\n

                  Question 56.
                  \nLocate on the outline map of the world.
                  \n\"Class<\/p>\n

                  NCERT Class 8 Geography Chapter 3 Extra Questions Long Answers Type<\/h3>\n

                  Question 57.
                  \nShow the following on the outline map of the world.
                  \n(i) South Africa
                  \n(ii) China
                  \n(iii) India
                  \n(iv) USA
                  \n(v) Australia
                  \nAnswer:
                  \n\"Class<\/p>\n

                  Question 58.
                  \nDescribe the distribution of minerals in North America.
                  \nAnswer:
                  \nIn North America mineral deposits are found in three zones:
                  \n(i) The Canadian Shield – Iron-ore, nickel, gold, uranium and copper are found.
                  \n(ii) Appalachian region – Coal
                  \n(iii) Western Cordilleras – Copper, lead, zinc, gold and silver.<\/p>\n

                  \"Class<\/p>\n

                  Question 59.
                  \nAfrica is rich in mineral resources. Justify.
                  \nAnswer:
                  \n(i) Africa is the world\u2019s largest producer of diamonds, gold and platinum.
                  \n(ii) South Africa, Zimbabwe and Zaire produce a large portion of the world\u2019s gold.
                  \n(iii) Copper, iron-ore, chromium, uranium, cobalt and bauxite are the other minerals found in Africa.
                  \n(iv) Oil is found in Nigeria, Libya and Angola.<\/p>\n

                  Question 60.
                  \nGive a brief account of minerals found in Australia.
                  \nAnswer:
                  \n(i) Australia is the largest producer of bauxite in the world.
                  \n(ii) It is a leading producer of gold, diamond, iron-ore, tin and nickel.
                  \n(iii) Rich deposits of copper, lead, zinc and manganese are also found.
                  \n(iv) Large deposits of gold are found in Kalgoorlie and Coolgardie.<\/p>\n

                  Question 61.
                  \nName two metallic and non- metallic minerals found in India. Also, mention the areas where they are found.
                  \nAnswer:
                  \nTwo metallic minerals\u2019of India are:
                  \n(i) Copper: It is found in Rajasthan, Madhya Pradesh, Jharkhand, Karnataka and Andhra Pradesh.
                  \n(ii) Manganese: It is found in Maharashtra, Madhya Pradesh, Chhattisgarh, Orissa, Karnataka and Andhra Pradesh.<\/p>\n

                  Two non-metallic minerals of India are:
                  \n(i) Limestone: Major limestone producing states are Bihar, Jharkhand, Orissa, Madhya Pradesh, Chhattisgarh, Rajasthan, Gujarat and Tamil Nadu.
                  \n(ii) Salt: It is obtained from seas, lakes and rocks. Salt is extracted in Rajasthan and Gujarat.<\/p>\n

                  Question 62.
                  \nWhy is conservation of minerals necessary? Mention two ways by which minerals can be conserved.
                  \nAnswer:
                  \nConservation of minerals is important because:
                  \n(i) It takes thousands of years for the formation and concentration of minerals.
                  \n(ii) The rate of formation of minerals is much slow in comparison to their consumption.<\/p>\n

                  Two ways by which minerals can be conserved are:
                  \n(i) To reduce the wastage in the process of mining.
                  \n(ii) Recycling of metals.<\/p>\n

                  Question 63.
                  \nWrite the advantages and disadvantages of hydel power.
                  \nAnswer:
                  \nAdvantages:
                  \n(i) It does not cause environmental pollution.
                  \n(ii) It promotes irrigation and fishing.
                  \n(iii) It is cheap.
                  \nDisadvantages:
                  \n(i) It leads to the displacement of local community.
                  \n(ii) It is expensive to set-up a hydel power project.
                  \n(iii) It affects the natural flow of the rivers. It also causes excessive sedimentation at the bottom of the reservoir.<\/p>\n

                  \"Class<\/p>\n

                  Question 64.
                  \nWhere are the reserves of natural gas found? Mention its uses. Also mention the major natural gas producing countries.
                  \nAnswer:
                  \n(i) Natural gas is found with petroleum deposits and is released when crude oil is brought to the surface.
                  \n(ii) It can be used as a domestic and industrial fuel.
                  \n(iii) The major natural gas producing countries are Russia, Norway, UK and Netherlands.<\/p>\n

                  Question 65.
                  \nHow is the hydel power produced?
                  \nAnswer:
                  \nWater stored in the dams is made to fall from heights. The falling water flows through pipes inside the dam over turbine blades placed at the bottom of the dam. The moving blades then turn the generator to produce electricity.<\/p>\n

                  Question 66.
                  \nWhy is there need for using non- conventional sources of energy?
                  \nAnswer:
                  \n(i) The sharp increase in the consump-tion of fossil fuels has led to their depletion at an alarming rate.
                  \n(ii) The toxic pollutants released from burning the fuels cause environmental pollution.
                  \n(iii) The conventional sources are non-renewable.
                  \n(iv) It takes millions of years for the formation of fossil fuels.
                  \nTherefore, there is need for using non- conventional sources such as solar energy, wind energy. These sources are renewable.<\/p>\n

                  Question 67.
                  \nWrite the advantages and dis-advantages of wind energy.
                  \nAnswer:
                  \nAdvantages:
                  \n(i) It does not cause environmental pollution.
                  \n(ii) Once the windmill is set up, the cost of production of electricity is less.
                  \n(iii) It is safe and does not leave any waste.<\/p>\n

                  Disadvantages:
                  \n(i) It causes noise pollution.
                  \n(ii) Windmills are costly to set-up.
                  \n(iii) Windmills disturb radio and TV reception.
                  \n(iv) Windmills are harmful to birds.<\/p>\n

                  \"Class<\/p>\n

                  Question 68.
                  \nWhat is biogas? How is it obtained? Write its two uses.
                  \nAnswer:
                  \n(i) Organic wastes such as dead plant and animal material, animal dung and kitchen waste can be converted into a gaseous fuel called biogas.
                  \n(ii) The organic waste is decomposed by bacteria in biogas digesters to emit biogas which is essentially a mixture of methane and carbon dioxide.
                  \nUses of biogas:
                  \n(a) Biogas is used for cooking and lightening.
                  \n(b) It produces huge amount of organic manure<\/p>\n

                  Hope the data shared above regarding the NCERT Class 8 Geography Chapter 3 Extra Questions and Answers Mineral and Power Resources PDF has aided in your exam preparation. If you ever need any assistance you can always reach us and our team will guide you at the soonest possibility.<\/p>\n","protected":false},"excerpt":{"rendered":"

                  Make your learning experience enjoyable by preparing from the Class 8 Geography Chapter 3 Extra Questions and Answers Answers Mineral and Power Resources available on this page. All the Solutions are covered as per the latest syllabus guidelines. Knowing the Answers to the Extra Questions for Class 8 Social Science Geography Chapter 3 Answers Mineral …<\/p>\n

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