Science and Technology Ravi P Agrihari 9th Edition Book PDF 2026

Science and Technology Ravi P Agrihari 9th Edition Book PDF 2026 : Preparing Science and Technology for UPSC and State Civil Services is often considered challenging because the subject is highly dynamic, concept-heavy, and closely linked with current affairs. To solve this problem, Courseware on Science and Technology by Ravi P. Agrahari (Ph.D., Ex-Scientist IIT Delhi), published by McGraw Hill, has emerged as one of the most trusted and exam-oriented resources.

This article provides a complete English review, including syllabus coverage, features, exam suitability, study strategy, and why this book is highly recommended for serious aspirants.

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Why Science & Technology Is Crucial for UPSC

In recent years, UPSC has increased the weightage of Science & Technology in both Prelims and Mains. Topics like AI, biotechnology, space technology, nanotechnology, energy, health tech, and digital governance are frequently asked. Questions are no longer purely factual; they test conceptual clarity, application, and interlinking with current affairs.

This is exactly where this courseware stands out.

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Overview of the Book

Courseware on Science and Technology (9th Edition) is designed strictly according to the latest UPSC syllabus and notification. The book is not limited to static theory; it integrates concepts, PYQs, visuals, and digital learning tools to make learning effective and exam-ready.

Author Credibility

The author, Ravi P. Agrahari, is a former scientist from IIT Delhi, which reflects clearly in the scientific accuracy, clarity, and depth of explanations throughout the book.

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Key Features That Make This Book Unique

🔹 100+ Video Lectures (Integrated Learning)

• 65+ conceptual video lectures for core topic clarity

• Prelims PYQ video discussions (2011–2025)

• Mains PYQ video discussions (2013–2025)
  These videos help bridge the gap between static theory and real UPSC questions.

🔹 Comprehensive Syllabus Coverage

The book covers the entire Science & Technology syllabus as prescribed by UPSC, including:

• Artificial Intelligence & Machine Learning

• Biotechnology & Health Science

• Space Technology & Defence

• Energy, Environment & Sustainable Technology

• IT, Communication & Emerging Technologies

🔹 Infographics & Visual Learning

• 80+ infographics simplify complex topics

• Flowcharts and diagrams help in quick revision and answer writing

🔹 Practice-Oriented Approach

• 11 unit-wise practice tests

• 4 full-length mock tests for exam-like practice

• PYQs included with conceptual explanations

🔹 Free Digital Access

• Free access to full-colour eBook

• Online interactive webinars by the author

• QR-based access to digital resources

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Usefulness for UPSC Prelims

For Prelims, UPSC focuses on:

• Conceptual clarity

• Application-based MCQs

• Interdisciplinary questions

This book:

• Explains concepts in simple, exam-focused language

• Covers previous year trends

• Helps eliminate guesswork through strong fundamentals

If you struggle with science questions in Prelims, this courseware significantly improves accuracy.

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Usefulness for UPSC Mains

For Mains GS Paper III, Science & Technology answers require:

• Structured explanations

• Current relevance

• Diagrams and examples

This book supports Mains preparation by:

• Providing answer-oriented explanations

• Integrating current developments with static concepts

• Helping aspirants frame analytical and value-added answers

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Suitable for Which Exams?

This book is highly useful for:

• UPSC Civil Services (Prelims & Mains)

• State PCS Examinations

• Other competitive exams with Science & Tech syllabus

Both beginners and experienced aspirants can benefit equally.