Science and Technology Notes for UPSC Exam

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The UPSC exam has multiple subjects incorporated in the prelims and the mains exam. Except for the mains optional subject, all the subjects are mandatory for all the applicants to attempt. One of them is General Science.

This mainly deals with four sub-topic – Physics, Chemistry, Biology, and Current Affairs related to Science and technology. The prelims and mains both have this subject with a similar syllabus. The level of difficulty is more in the mains exam as the questions are subjective and opinion-based.

Let’s take a look at some of the important science and technology topics for the UPSC Exam.

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Science and Technology Notes for UPSC Exam

DataFlair UPSC Science and Technology Quizzes

These were some of the important Science and Technology or general Science topics for the UPSC Exams. It is important to know basic science concepts before entering the Public Service field. In order to do that, you must revise and practice as much as possible by solving mock papers and quizzes.

DataFlair is offering free UPSC Mock Test Paper and UPSC Quizzes for all the applicants of Several competitive exams. Here’s a list of UPSC Science and technology Quizzes to boost your UPSC preparation.

Science and Technology Syllabus for UPSC Prelims Exam

  • Universe – Big Bang, Redshift, and Blueshift
  • Star Formation
  • Solar System Formation
  • Solar System – Internal Structure and Atmosphere
  • Nuclear Fission
  • Nuclear Reactor Types
  • India’s Three-Stage Nuclear Power Programme
  • Cell Organelles
  • Carbohydrates
  • Proteins
  • Vitamins and Minerals
  • Fats
  • Animal Tissues
  • Human Digestive System
  • Respiratory System
  • Endocrine Glands and Hormones
  • Human Neural System
  • Muscular and Skeletal System
  • Nucleic acids
  • Mitosis
  • Inheritance
  • Human Genome Project
  • Sex Determination
  • Diseases Caused by Microorganisms
  • Microbes in Human Welfare
  • Human Immune System
  • AIDS, Cancer
  • Drugs and Alcohol Abuse
  • Diseases
  • Blood
  • Circulatory System
  • Excretory System
  • Origin and Evolution of Life on Earth
  • Biological Classification
  • Five Kingdom Classifications of Plants and Animals
  • Plant Parts and Their Functions
  • Plant Kingdom
  • Plants with Seeds
  • Plant Tissue
  • Plant Nutrition
  • Sexual and Asexual Reproduction in Plants
  • Classification of Animal Kingdom
  • Classification of Vertebrata
  • Human Reproductive System
  • Biotechnology
  • Atomic Theory
  • DELP (UJALA) Scheme
  • LED – CFL – Incandescent Bulb

Science and Technology Syllabus for UPSC Mains Exam

  • Chemicals in Food
  • Drugs
  • Cleansing Agents
  • Glass
  • Water Softener
  • Water Purification/Disinfection
  • Microwave Oven, etc.
  • Achievements of Indians in Science & Technology
  • Indigenization of Technology
  • Developing New Technology
  • Awareness in Different Fields
  • Intellectual Property Rights
  • Conservation
  • Environmental Pollution & Degradation
  • Environmental Impact Assessment (EIA)
  • Disaster Management
  • National Environment Agencies, Legislations and Policies
  • International Environment Agencies & Agreements
  • Economics of Animal-Rearing
  • Issues of Buffer Stocks & Food Security
  • Food Processing & Industries in India
  • Major Crops and Cropping Patterns in India
  • Different Types of Irrigation & Irrigation Systems Storage
  • Transport & Marketing of Agricultural Produce
  • E-Technology in the Aid of Farmers, Technology Missions
  • Direct & Indirect Farm Subsidies
  • Minimum Support Prices
  • Public Distribution System

How to Prepare for Science and Technology for UPSC Exam

  • Start with the most basic concepts. The main idea is to understand the application behind the scientific concepts in order to answer questions related to that. You should begin with what the definition means and then what are the applications of the particular concept. Then you dive into the subtopics of a given topic.
  • For example, the Atom as a concept is a wide topic to cover. You begin with what it means, then the history, then various studies, and finally the application. This way you follow a particular flow covering everything.
  • The most important topics in the science and technology sections are – Human Body, Plant System, and Basic Physics Modules. These are very wide and must be understood from the core rather than just skimming the concept from above. Applicants must begin with elementary books for this subject.
  • After finishing the basics of the science as mentioned above, you get into details. Biotechnology, Atomic Theory, Animal and Plant Kingdom Phylums, and more are some next important topics in this subject. They are a bit complex and you must know the simpler concepts first to understand these in detail.
  • Lastly, read everything thoroughly from the beginning. Don’t take this subject lightly as this is the most complex subject of the examination. Give it an ample amount of time and effort to improve your result and qualify for the mains exam. Read all the topics in the syllabus and don’t make the mistake of leaving anything for the end.
  • NCERT is the best book to study for these particular subjects. It is because of the simple language and accessibility. Applicants from all around the country can access the books and prepare accordingly. You can refer to the list of NCERT Books for the UPSC exam for further details.


A lot of attention is given to the Science and Technology topic as it is application based. This article will guide you with all the important general science topics for the UPSC exam.

The topics are mainly from three main subjects – Physics, Chemistry, and Biology. They are very important for all competitive exams in India and must be taken seriously.

We have also added some DataFlair UPSC Science and Technology Quiz for all the aspirants so that they can practice well before the exam. This will also help you prepare an examination strategy for the general science section.

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