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]

xv.2. Classification of Biofuels 

About

  • For the sake of simplicity think of plant biomass in terms of edible and non-edible part.
  • The edible part of plant like fruits, vegetables, grains etc. are usually made simple sugar, starch.
  • The other edible part is seeds that have edible oils.
  • The non-edible part of biomass on the other hand is made of cellulose, hemi-cellulose and lignin.

Energy From Biofuels

  • There are 3 pathways to derive energy out of biofuels:
  • Burn them
  • Make alcohols like ethanol and methanol
  • Make biodiesel
  • Make biogas

Burning of Biofuels

  • Burning solid biofuel will leave solid ash residue which is not desirable. Eg: Cow dung, wood etc
  • So, we need to gasify or liquify biomass.

Liquifying Biofuels

  • Liquifying biofuels again include 2 pathways
  • Make alcohols: ethanol and methanol: fermentation
  • Make biodiesel: From vegetable oils: transesterification

Gasifying Biofuels

  • Biogas: Bio-methanation
  • Biohydrogen: from syngas

Alcohols: Ethanol and Methanol

  • Alcohols are best alternatives to petrol.
  • You can directly replace petrol with ethanol or methanol in IC engines or alternately you may blend it with petrol. (Ethanol blending upto 20% by 2030 is the target)