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
UPSC Sample Notes [English]

P.6. Ocean acidification and the short and long-term fate of carbon in the system 

Long-Term Fate of Carbon:

  • Natural Balance: Over a super long time (more than 100,000 years), Earth naturally handles CO2. Volcanoes release it, and plants and rocks soak it up.

Upwelling:

  • Definition: Sometimes, ocean areas get a visit from deep water that’s full of nutrients and CO2.
  • Effect of Ocean Acidification: Because the upper ocean is becoming less saturated with CO2 each year due to ocean acidification, these visits might bring up water that could affect sea life, especially creatures that make shells.
  • Rock Weathering: However, the process of rocks soaking up CO2 is slow and can’t quickly get rid of the CO2 we’re putting into the air.

Short-Term Carbon Cycling

  • Internal Feedback: Over shorter times (more than 1,000 years), the ocean has a way of managing carbon. It’s like a self-regulating system that involves carbonate-rich sediment.
  • Ocean Layers: The upper ocean is good at keeping carbonate (like a shell material) without it dissolving. Deeper ocean layers dissolve carbonate.
  • Lysocline: Think of the lysocline as the point where deep ocean dissolving really starts to kick in.
  • Sinking Shells: Shells from sea creatures sink to the ocean floor. In shallow water, they get buried and stick around for a long time. But in deep water, most of them dissolve, not trapping carbon for millions of years.
  • Impact of Ocean Acidification: More CO2 going into the ocean messes up this balance. As the ocean becomes more acidic, it makes the lysocline and another depth (called carbonate compensation depth or CCD) shallower. This exposes more trapped shells to conditions that might dissolve them, which helps a bit with ocean acidification, but it takes a long time—like a thousand years.

Coastal Upwelling

Rock Weathering

Carbon Cycling

Carbonate Compensation Depth (CCD)