Download CBSE Class 10 Social Science Minerals And Energy Resources Notes Set A in PDF format. All Revision notes for Class 10 Social Science have been designed as per the latest syllabus and updated chapters given in your textbook for Social Science in Standard 10. Our teachers have designed these concept notes for the benefit of Grade 10 students. You should use these chapter wise notes for revision on daily basis. These study notes can also be used for learning each chapter and its important and difficult topics or revision just before your exams to help you get better scores in upcoming examinations, You can also use Printable notes for Class 10 Social Science for faster revision of difficult topics and get higher rank. After reading these notes also refer to MCQ questions for Class 10 Social Science given our website
Key concepts to Remember-
1. Placer deposits-Minerals that occur as alluvial fans in sands of valley floors, and the base of hills.
2. Rat-hole Mining -In the tribal areas of North-East India mining is carried out by individuals or communities illegally. The mining is done in the form of a long narrow tunnel known as Rat hole mining.
3. Magnetite-It is the finest iron ore with a very high content of iron up to 70%. It has excellent magnetic qualities, especially valuable in the electrical industry.
4. Hematite ore-It has slightly lower iron content than magnetite-50-60%
SHORT ANSWER TYPE QUESTIONS (3 MARKS)
1. Write two uses of Mica and also areas famous for mica deposits.
• Used in electric and electronic industries
• Areas - (a) Gaya-Hazaribagh inJharkhand, and
(b)Ajmer and Beawarin Rajasthan
2. What are three types of Coal? Write one difference of each type of coal?
• Lignite coal-low grade brown coal soft with high moisture content. Found in Nevyel i(T.N)
• Bituminous Coal- It contains 60-80% of carbon content.
• Anthracite- Best quality, contains more than 80% of carbon content.
3. What are Geo-thermal Energy? Which are the two experimental projects of geothermal energy in India?
• Geo-thermal energy refers to the heat and electricity produced by using the heat from the interior of the earth
• Parvati Valley near Manikarn in Himachal Pradesh
• Puga valley in Ladakh
4. Why is mining activity often called a “Killer Industry”. Give three reasons.
• High risk involved
• Due to poisonous fumes, mines are vulnerable to workers for pulmonary diseases.
• Risk of collapsing mines roofs, and fires in coal mines.
• Water sources get contaminated.
5. Give three reasons in favour of the use of ‘Atomic energy’
• Coal and natural oil are exhaustible.
• Abundant deposits of uranium and thorium in India
• Most developed countries are utilizing this energy successfully
• It can be useful in fields of medicines and agriculture
• Hydel energy is not satisfactory due to environmental issues.
6. Why does solar energy in Rajasthan have great potential as non –conventional source of energy?
• Hot and dry region
• Clear sky almost whole year
• Cheaper installation
• Renewable and pollution free energy source.
• Government motivation
7. How can we conserve energy resources in India? Explain
• Using public transport instead of individual vehicles.
• Switching of electricity when not in use.
• Using power saving devices.
• Use of non-conventional source of energy as they are renewable and eco- friendly.
• In automobiles electrical motors should be introduced.
• Intensified exploration and research of new sources of energy
Important Questions NCERT Class 10 Social Science Chapter 5 Minerals and Energy Resources
Question. How is iron-ore transported from Kudremukh mines to a port near Mangaluru?
Ans. Iron ore is transported as slurry through pipelines.
Question. Describe any three characteristics of Bellary-Chitradurga, Chikmaglur-Tumkur iron-ore
blet in India.
Ans. Ballari-Chitradurga-Chikmagaluru-Tumakuru belt in Karnataka has large reserves of iron ore.
(a) The Kudremukh mines located in the Western Ghats of Karnataka.
(b) They are a 100 per cent export unit.
(c) Kudremukh deposits are known to be one of the largest in the world. The ore is transported as slurry through a pipeline to a port near Mangaluru.
Question. Which minerals are used to obtain nuclear energy? Name all the six nuclear power stations of India.
Ans. The minerals which are used to obtain nuclear energy are Uranium, Thorium.
(i) Narora nuclear power station.
(ii) Kakrapara nuclear power station.
(iii) Tarapur nuclear power station.
(iv) Kaiga nuclear power station.
(vi) Rawat Bhata nuclear power station.
Question. Which are the potential sources of biogas? State any four benefits of biogas.
Ans. Potential sources of biogas are : Shrubs, farm wastes, animal human waste, etc.
Four benefits of biogas are :
(i) Its calorific value is high.
(ii) It burns without smoke, causing no pollution.
(iii) It is the cheapest gaseous fuel.
(iv) Its plants provide twin benefits to the farmer in the form of energy and improved quality of manure.
Question. Why should we use renewable energy resource? Explain with arguments.
Ans. In the present circumstances particularly in India there is a pressing need to use renewable energy resources because :
1. Non-renewable resources are limited and will get exhausted in few decades, thus there is a need to use inexhaustible energy resources such as solar power, for sustainable development.
2. There has been a rapid depletion of non- renewable resources like coal, gasoline, petroleum that took millions of years to form. Thus, it makes immense sense to use renewable nonpolluting energy resources.
3. Fossil fuels like coal, petroleum products etc., create pollution which has resulted in environmental degradation making clean energy an urgent requirement.
4. Newer sources of fossil fuels are becoming more and more difficult to find hence they have become more expensive. Thus, it again points to adaptation to renewable energy sources like solar, geothermal wind energy etc.
Question. Explain the importance of conservation of minerals. Highlight any three measures to conserve them.
Ans. Conservation of minerals is the need of the hour :
(i) Minerals are considered to be the backbone of the economy.
(ii) Industry largely depends on mineral deposits.
(iii) Total volume of workable mineral deposits is very less-only 1% of the earth's crust.
(iv) Mineral resources are being consumed rapidly, and minerals deposits need millions of years to be created and concentrated.
(v) The geological process of mineral formation are so slow that the rates of replenishment are infinitely small in comparison to the present rates of consumption.
(vi) Mineral resources are finite and non- renewable.
(vii) The rich mineral deposits of our country are extremely valuable but shorts-lived possessions.
Please click the link below to download pdf file for CBSE Class 10 Social Science Minerals And Energy Resources Notes Set A.
Click for more Social Science Study Material ›