This comprehensive book is specially developed for the candidates of Intelligence Bureau: ACIO (Grade-II/Executive) Exam. This book included Study Material and Previous Years Papers (Solved) for the purpose of practice of questions based on the latest pattern of the examination. Detailed Explanatory Answers have also been provided for the selected questions for Better Understanding of the Candidates

The second edition of the book continues to offer a range of pedagogical features maintaining the balanced approach of the text. The attempts have been made to further strengthen the conceptual understanding by introducing more ideas and a number of solved problems. Comprehensive in approach, this text presents a rigorous treatment of organic chemistry to enable undergraduate students to learn the subject in a clear, direct, easily understandable and logical manner. Presented in a new and exciting way, the goal of this book is to make the study of organic chemistry as stimulating, interesting, and relevant as possible. Beginning with the structures and properties of molecules, IUPAC nomenclature, stereochemistry, and mechanisms of organic reactions, proceeding next to detailed treatment of chemistry of hydrocarbons and functional groups, then to organometallic compounds and oxidation–reduction reactions, and ending with a study of selected topics (such as heterocyclic compounds, carbohydrates, amino acids, peptides and proteins, drugs and pesticides, dyes, synthetic polymers and spectroscopy), the book narrates a cohesive story about organic chemistry. Transitions between topics are smooth, explanations are lucid, and tie-ins to earlier material are frequent to maintain continuity. The book contains over 500 solved problems from simple to really challenging ones with suitable explanations. In addition, over 275 examples and solved problems on IUPAC nomenclature, with varying levels of difficulty, are included. About Some Key Features of the Book • EXPLORE MORE: Four sets of solved problems provide in-depth knowledge and enhanced understanding of some important aspects of organic chemistry. • MINI ESSAYS: Three small essays present interesting write-ups to provide students with introductory knowledge of chemistry of natural products such as lipids, terpenes, alkaloids, steroids along with nucleic acids and enzymes. • NOTABILIA: Twenty-two ‘notabilia boxes’ interspersed throughout the text highlight the key aspects of related topics, varying from concepts of chemistry to the chemistry related to day-to-day life. • STRUCTURES AND MECHANISMS NOT IN ORDER: Cites examples of common errors made by students while drawing structural formulae and displaying arrows in reaction mechanisms and helps them to improve on language of organic chemistry by teaching appropriate drawings and their significance. • GLOSSARY: Includes ‘Name reactions’, ‘Reagents’, and some important terms for quick revision by students. Clearly written and logically organized, the authors have endeavoured to make this complex and important branch of science as easy as possible for students to learn from and for teachers to teach from.

Railway Track Engineering presents conventional methods of track construction, maintenance and monitoring, along with modern sophisticated track machines. It also comprehensively covers design details and specifications of important track componentsChanges in the revised edition include:Explanation of the hitherto little understood phenomenon of rolling contact fatigue in rails and practical steps to deal with it. New technology of alumino-thermic rail welding. New guidelines for ultrasonic rail flaw detection. Ballastless track for metros, mainlines and washable aprons. Track standards for ultra high-speed lines in India. Track structure for Dedicated Freight Corridors. Technology of fully mechanized track construction with the deployment of simple track laying equipment to highly sophisticated track-laying trains.Richly illustrated with photographs and line drawings, this book will be useful to professionals and students.

Reasoning is equally weighed section in any competitive examination. Reasoning tests the thinking power and mind applicability skills of the candidates. The questions on reasoning asked in various competitive examinations are not easy to solve without having enough practice. The revised edition of A New Approach to Reasoning will help candidates master the ‘Tricks of the Trade’ as it covers all the three types of reasoning very much comprehensively. This book has been divided into 3 Sections – Verbal Reasoning, Analytical Reasoning and Non-Verbal Reasoning each sub-divided into number of chapters with different types of questions of multiple patterns asked in various exams. The Verbal Reasoning section covers Analogy, Clocks, Calendar, Puzzles, Coding-Decoding, Classification, Number Series, Letter Series, Blood Relations, Clerical Aptitude, etc. whereas, the Analytical Reasoning section covers Statement & Arguments, Statement & Assumptions, Course of Action, Cause & Effects, Syllogism, etc. The Non-Verbal Reasoning section covers Analogy, Classification, Completion of Figures, Cubes, Paper Folding, Mirror Image, Water Image, Figure Matrix, etc. Two Leveled Exercises have been given for practice. More than 2000 Previous Years’ Questions of different competitive examinations including MAT and other MBA entrances, Bank PO, Clerk, SSC, LIC, RBI, RRB, B.Ed. etc along with their authentic and detailed solutions have been covered in the exercises. The ample number of previous years’ questions will help the candidates get an insight into the trends and types of questions asked in the test of reasoning in various competitive and recruitment examinations.

Topic-wise Bank PO/ Clerk Prelim & Mains Solved Papers Quantitative Aptitude consists of past solved papers of Bank Exams - IBPS PO, IBPS Clerk, SBI PO, SBI Clerk and Specialist Officer from 2010 to 2016. • The coverage of the papers has been kept RECENT (2010 to 2016) as they actually reflect the changed pattern of the Banking exams. Thus the papers prior to 2010 have not been included in the book. • In all there are 30 Question papers from 2010 to 2016 which have been provided topic-wise along with detailed solutions. • Practicing these questions, aspirants will come to know about the pattern and toughness of the questions asked in the examination. In the end, this book will make the aspirants competent enough to crack the uncertainty of success in the Entrance Examination. • The strength of the book lies in the originality of its question papers and Errorless Solutions. The solution of each and every question is provided in detail (step-by-step) so as to provide 100% concept clarity to the students.