# Lucent's General Knowledge 2026 - English | 15th Revised Edition | For UPSC, SSC, NDA, CDS, Banking, Railways, Defence & All Competitive Exams (2026-27)
> Lucent GK 2026 — 15th edition, 494 pages, all subjects from History to AI, for every major Indian exam.

## Details

- **Author:** Dr. Binay Karna, Sanjiv Kumar, Manvendra Mukul, R.P. Suman, Renu Sinha
- **Publisher:** Lucent Publication, Patna
- **Language:** English
- **Edition:** 15th Revised Edition (2026)
- **Year:** 2025
- **Pages:** 494
- **File Size:** 440.5 MB
- **Difficulty:** intermediate
- **Price:** Free
- **URL:** https://www.allcompetitionclasses.co.in/books/lucents-general-knowledge-2026-english-15th-revised-edition-for-upsc-ssc-nda-cds-banking-railways-defence-all-competitive-exams-2026-27

## Exam Relevance
- UPSC Civil Services Prelims
- SSC CGL
- SSC CHSL
- SSC MTS
- SSC GD Constable
- SSC CPO
- SSC Stenographer
- RRB NTPC
- RRB Group D
- RRB ALP
- NDA
- CDS
- CAPF
- IB ACIO
- IBPS PO
- IBPS Clerk
- SBI PO
- SBI Clerk
- LIC AAO
- BPSC
- UPPCS
- MPPSC
- RPSC
- JPSC
- KVS
- NVS
- DSSSB
- CTET
- State PSC Exams
- Defence Exams
- Insurance Exams

## Subjects & Topics
- Indian History
- Ancient Medieval Modern History
- World History
- Indian Geography
- World Geography
- Indian Polity and Constitution
- Indian Economy
- Physics
- Chemistry
- Biology
- Science and Technology
- Artificial Intelligence
- Miscellaneous GK
- Awards and Honours
- Important Days
- International Organisations
- Sports Records
- Books and Authors
- National Symbols
- Defence Establishments
- General Knowledge
- Competitive Exam Preparation
- General Studies

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## Full Description
If there is one GK book that has been recommended across coaching centres, toppers' reading lists, and YouTube educator videos for over a decade without interruption — it is Lucent's General Knowledge. The 15th revised edition, updated for 2026-27 exams, carries that reputation forward with freshened content, updated facts and figures, and the same clear, concise format that made it a staple for millions of aspirants. In 494 pages, it covers everything from ancient India to artificial intelligence, from constitutional bodies to world geography — all in plain English that is easy to read, easy to revise, and easy to retain.

The book is structured across several broad subject areas, and each one maps closely to what Indian competitive exam syllabuses actually demand.

Indian History is one of the most detailed sections. It runs from Harappan and Indus Valley Civilization through the Vedic period, Mahajanapadas, Mauryan Empire (with focus on Ashoka and the spread of Buddhism), the Gupta golden age, Sangam period, early medieval kingdoms of North and South India, Delhi Sultanate (all five dynasties), the Bhakti and Sufi movements, Mughal Empire, Maratha Confederacy, the arrival of Europeans, expansion of British power in Bengal, Mysore, and Punjab, the 1857 revolt, social reform movements (Raja Ram Mohan Roy, Dayanand Saraswati, Swami Vivekananda), the Indian National Congress, Gandhian movements (Non-Cooperation, Civil Disobedience, Quit India), revolutionary movements, and finally Independence and Partition in 1947. World History covers the American, French, Industrial, and Russian Revolutions, World War I and II, and the formation of the United Nations.

Geography is split into Indian and World Geography. The Indian section covers physical features (Himalayas, Deccan Plateau, river systems), climate zones, natural vegetation, soils, minerals, agriculture, industries, transportation, and a state-wise overview with important facts and figures. The World Geography section covers the Earth and Universe, climatology, geomorphology, oceanography, continents and countries, major rivers and mountains, and important geographical facts. Both sections include clearly organized tables and data points that are easy to memorize.

Indian Polity covers the Constitution of India from its making to its current form — Preamble, Fundamental Rights and Duties, Directive Principles, Parliament (Lok Sabha, Rajya Sabha), the Executive (President, Prime Minister, Council of Ministers), Judiciary (Supreme Court, High Courts), constitutional bodies (Election Commission, CAG, Finance Commission, UPSC), non-constitutional bodies (NITI Aayog, CBI, NHC), Panchayati Raj, Union Territories, national symbols, official languages, and important amendments. This section is essential for UPSC Prelims, SSC CGL, and all State PSC exams.

Indian Economy covers national income (GDP, GNP, NNP), planning in India, Five-Year Plans, NITI Aayog, banking system (RBI, commercial banks, NABARD, SIDBI), taxation (direct and indirect taxes, GST), budget, inflation, poverty and unemployment, agriculture in India, trade and balance of payments, and recent economic developments including Make in India, Digital India, and key government schemes.

General Science is divided into Physics, Chemistry, and Biology. Physics covers mechanics, heat, light, sound, electricity, magnetism, and modern physics. Chemistry covers atomic structure, periodic table, chemical bonding, acids, bases, salts, metals and non-metals, and organic chemistry basics. Biology covers cell structure, human body systems (digestive, respiratory, circulatory, nervous, excretory), plant biology, genetics, diseases, and nutrition. This section directly feeds into the General Awareness papers of SSC, Railway, and Defence exams.

The Miscellaneous section is packed with high-frequency static GK — firsts in India and the world, superlatives, important national and international organisations, UN bodies, important days (national and international), India's World Heritage Sites, defence establishments, nuclear and space research centres, sports records, awards (Bharat Ratna, Padma, Nobel, Oscars, Booker), books and authors, abbreviations, and recent developments in Science and Technology including Artificial Intelligence. This edition notably includes AI-related content which reflects exam paper trends in 2025-26.

This book is built for every aspirant who needs a single GK reference that is wide enough to not leave major gaps. SSC CGL, CHSL, MTS, CPO, GD Constable, and Stenographer exams — the General Awareness section is directly served by this book. RRB NTPC and Group D candidates use it as their primary GK source. UPSC Civil Services Prelims aspirants use it for quick concept building and revision in GS Paper 1 static topics. NDA and CDS exams have dedicated GK papers where this book covers the core. IBPS PO, IBPS Clerk, SBI PO, and SBI Clerk exams with General Awareness sections benefit from this as well. BPSC, UPPCS, MPPSC, RPSC, and other State PSC aspirants rely on it for GS preparation. KVS, NVS, DSSSB, CTET, and teaching exams also draw from these topics. LIC AAO and insurance sector exams complete the picture.

The author team — led by Dr. Binay Karna alongside Sanjiv Kumar, Manvendra Mukul, R.P. Suman, and Renu Sinha — are long-time contributors to Lucent Publication's academic program. Dr. Binay Karna in particular has been associated with Lucent GK since its early editions, and the consistency of quality across fifteen editions reflects a disciplined editorial approach. The book is updated annually, so the 2026 edition carries content revisions aligned with recent developments, new government schemes, and updated statistics.

This PDF library hosts this edition in a mobile-friendly compressed format. The file loads quickly, chapters are directly accessible, and the reading experience on both phone and tablet is smooth. Offline reading works well, which makes it useful during travel or in areas with unstable internet.

Lucent GK has been around long enough to be proven. If you are starting your GK preparation or need a single book for fast, structured revision — this is the one most aspirants reach for. Download it, read it subject by subject, and make every General Awareness section in your exam a reliable scoring opportunity.

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