IAS/PCS Prelims Practice Series – Environment & Ecology | Hindi Medium | 7th Edition

• Comprehensive practice book for IAS, PCS and other competitive examinations
• Includes 1100+ questions with answers and detailed explanations
• Contains questions previously asked or likely to be asked in IAS, PCS, CDS, NDA, CAPF and NTA UGC-NET
• Includes relevant questions asked in the IAS Prelims 2026 Examination
• Provides extensive coverage of Environment, Ecology, Biodiversity and Climate Change
• Questions and explanations support practice as well as quick revision of important concepts and facts
• Content draws upon important study resources, including Drishti’s Quick Book, NCERT, IGNOU and NIOS material
• Useful for conceptual clarity, self-assessment, revision and improving accuracy in objective examinations

About This Book

IAS/PCS Prelims Practice Series – Environment & Ecology by Drishti Publications is a comprehensive practice resource designed for aspirants preparing for Civil Services, State PCS and other competitive examinations. This seventh edition forms the fourth part of Drishti Publications’ seven-book Prelims Practice Series.

The book contains 1100+ questions with answers and detailed explanations. It includes questions previously asked or likely to be asked in examinations such as IAS, PCS, CDS, NDA, CAPF and NTA UGC-NET. Relevant questions from the IAS Prelims 2026 Examination have also been incorporated.

The book has been developed to strengthen an aspirant’s understanding of important environmental and ecological concepts. Through carefully selected questions and explanatory answers, it covers the essential facts and concepts related to the biosphere, biomes, ecosystems, environmental pollution, biodiversity, climate change, conservation and environmental governance.

The explanations are designed not only to provide the correct answer but also to revise the associated concept and important related facts. This helps candidates combine objective-question practice with effective revision of the subject.

The content incorporates important themes and study material from Drishti Publications’ Environment & Ecology Quick Book along with relevant concepts from NCERT, IGNOU and NIOS resources. Previous examination questions have also been included so that candidates can understand recurring themes and the nature of questions asked in competitive examinations.

Regular practice with this book can help aspirants strengthen conceptual understanding, evaluate their preparation, identify weaker topics and improve their ability to solve questions accurately within the available examination time.

Key Areas Covered

• Biosphere and Biomes
• Ecology and Ecosystems
• Functions of Ecosystems
• Biogeochemical and Nutrient Cycles
• Environmental Adaptation
• Environmental Pollution
• Environmental Impact Assessment
• Biodiversity and Conservation
• Climate Change and Global Warming
• Environmental Laws, Organisations and International Conventions

Table of Contents

• Biosphere and Biomes
• Ecology and Ecosystems
• Functions of Ecosystems
• Movement of Materials in Ecosystems
• Environmental Adaptation
• Environmental Pollution
• Environmental Impact Assessment
• Biodiversity
• Biodiversity in India
• Conservation of Biodiversity
• Concept of Climate Change
• India and Climate Change
• Organisations and Conferences Related to Climate Change
• Ozone Depletion
• Acidification
• Sustainable Agriculture
• Soil
• Environmental Laws, Organisations and Major Movements in India
• International Environmental Organisations and Conferences
• Various Dimensions of Renewable Energy
• Miscellaneous Topics