Course Content
UPSC Notes Samples
Full Syllabus Covered | 100% as per Official UPSC Syllabus
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1. Art & Culture Sample
Covered under topic 1. Indian culture will cover the salient aspects of Art Forms, Literature and Architecture from ancient to modern times.
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1. Indian culture will cover the salient aspects of Art Forms, Literature and Architecture from ancient to modern times. (copy)
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2. Modern Indian history from about the middle of the eighteenth century until the present- significant events, personalities, issues. (copy)
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5. History of the world will include events from the 18th century such as Industrial revolution, World wars, Redrawal of national boundaries, Colonization, Decolonization, Political philosophies like Communism, Capitalism, Socialism etc.- their forms and effect on the society.
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7. Role of women and women’s organizations, Population and associated issues, Poverty and developmental issues, Urbanization, their problems and their remedies.
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10.2. Introduction to Maps
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GS2
All topics that need updates are given below.
2. Functions and responsibilities of the Union and the States, issues and challenges pertaining to the federal structure, devolution of powers and finances up to local levels and challenges therein.
All topics that need updates are given below.
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5. Parliament and State Legislatures – structure, functioning, conduct of business, powers & privileges and issues arising out of these.
All topics that need updates are given below.
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6. Structure, organization and functioning of the Executive and the Judiciary; Ministries and Departments of the Government; pressure groups and formal/informal associations and their role in the Polity.
All topics that need updates are given below.
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12. Welfare schemes for Vulnerable Sections of the Population by the Centre and States and the Performance of these schemes; Mechanisms, Laws, Institutions and Bodies constituted for the Protection and Betterment of these Vulnerable Sections.
All topics that need updates are given below.
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GS3
All topics that need updates are given below.
11. Science and Technology- developments and their applications and effects in everyday life.
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GS3: BIODIVERSITY AND ENVIRONMENT
All topics that need updates are given below.
1. Environment
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GS4
All topics that need updates are given below.
GS3: SCIENCE AND TECHNOLOGY
All topics given below
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1. Motion & Measurements
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9. Metals & Non-Metals
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10. Energy
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12. Plant Organisms
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14. Life Processes
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18. Biotechnology
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19. Information Technology
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20. Space Technology
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National & International Current Affairs (CA) 2025
Current affairs of all months are given below
delete UPSC Sample Notes [English]

C.2. Structure Of The Earth


[Title: Interior of the Earth]

The Crust

  • It is the outermost solid part of the earth.
  • It is brittle in nature.
  • The thickness of the crust varies under the oceanic and continental areas.
  • Oceanic crust is thinner as compared to the continental crust.
  • The mean thickness of oceanic crust is 5 km whereas that of the continental is around 30 km.
  • It is as much as 70 km thick in the Himalayan region.
  • It is made up of heavier rocks having density of 3 g/cm3.
  • This type of rock found in the oceanic crust is basalt.
  • The mean density of material in oceanic crust is 2.7 g/cm3.

The Mantle

  • The portion of the interior beyond the crust is called the mantle.
  • The mantle extends from Moho’s discontinuity to a depth of 2,900 km.
  • The upper portion of the mantle is called asthenosphere.
  • The word astheno means weak. It is considered to be extending upto 400 km.
  • It is the main source of magma that finds its way to the surface during volcanic eruptions.
  • It has a density higher than the crust’s (3.4 g/cm3).
  • The crust and the uppermost part of the mantle are called lithosphere. Its thickness ranges from 10-200 km.
  • The lower mantle extends beyond the asthenosphere. It is in solid state

The Core

  • The core- mantle boundary is located at the depth of 2,900 km.
  • The outer core is in liquid state while the inner core is in solid state.
  • The density of material at the mantle core boundary is around 5 g/cm3 and at the centre of the earth at 6,300 km, the density value is around 13g/cm3.
  • The core is made up of very heavy material mostly constituted by nickel and iron. It is sometimes referred to as the nife layer.

[Title: Structure of earth]