The present book has been specially published for the candidates of ‘Central Reserve Police Force (CRPF) - ASI (Technical) Recruitment Exam’. Based on the latest pattern of the examination, the book is highly recommended to be familiar with the exam pattern. Separate sections have been provided in the book for detailed study and practice of important subjects of the exam. Specialised Study Material with Solved Question Paper. Each Topic Discussed Chapterwise in a Lucid Manner. Each Chapter Contains Sufficient Number of Solved Multiple Choice Questions (MCQs). Selected Multiple Choice Questions Provided with Detailed Explanatory Answers. It is believed, the book will prove very useful for study, practice and during precious moments before the exam for reference and revision. It is highly recommended to Sharpen your Problem Solving Skills with thorough practice of numerous questions provided in the book, and prepare yourself to face the exam with Confidence, Successfully.