#NDA/ NA 17 year Topic-wise Solved Papers (2006 - 2022) consists of last 17 years from 2006 - 2022 solved papers of General Ability Test distributed into 33 topics. #In all there are 31 Question papers (2006 April - 2022 April). #General Ability Test is divided into 2 parts – English and General Knowledge. #English is divided into 9 topics whereas General Knowledge is divided into 7 Units – Physics, Chemistry, Biology, History, Polity, Geography and General Awareness - which are further divided into 24 topics. #The book contains 4650 MCQ’s (1550 in English & 3100 in GK) from the above 31 Question papers. #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.

#NDA/ NA 17 year Topic-wise Solved Papers (2006 - 2022) consists of last 17 years from 2006 - 2022 solved papers of General Ability Test distributed into 33 topics. #In all there are 31 Question papers (2006 April - 2022 April). #General Ability Test is divided into 2 parts – English and General Knowledge. #English is divided into 9 topics whereas General Knowledge is divided into 7 Units – Physics, Chemistry, Biology, History, Polity, Geography and General Awareness - which are further divided into 24 topics. #The book contains 4650 MCQ’s (1550 in English & 3100 in GK) from the above 31 Question papers. #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.

In the time since the second edition of The ACS Style Guide was published, the rapid growth of electronic communication has dramatically changed the scientific, technical, and medical (STM) publication world. This dynamic mode of dissemination is enabling scientists, engineers, and medicalpractitioners all over the world to obtain and transmit information quickly and easily. An essential constant in this changing environment is the requirement that information remain accurate, clear, unambiguous, and ethically sound.This extensive revision of The ACS Style Guide thoroughly examines electronic tools now available to assist STM writers in preparing manuscripts and communicating with publishers. Valuable updates include discussions of markup languages, citation of electronic sources, online submission ofmanuscripts, and preparation of figures, tables, and structures. In keeping current with the changing environment, this edition also contains references to many resources on the internet.With this wealth of new information, The ACS Style Guide's Third Edition continues its long tradition of providing invaluable insight on ethics in scientific communication, the editorial process, copyright, conventions in chemistry, grammar, punctuation, spelling, and writing style for any STMauthor, reviewer, or editor. The Third Edition is the definitive source for all information needed to write, review, submit, and edit scholarly and scientific manuscripts.

Knowledge updating is a never-ending process and so should be the revision of an effective textbook. The book originally written fifty years ago has, during the intervening period, been revised and reprinted several times. The authors have, however, been thinking, for the last few years that the book needed not only a thorough revision but rather a substantial rewriting. They now take great pleasure in presenting to the readers the twelfth, thoroughly revised and enlarged, Golden Jubilee edition of the book. The subject-matter in the entire book has been re-written in the light of numerous criticisms and suggestions received from the users of the earlier editions in India and abroad. The basis of this revision has been the emergence of new literature on the subject, the constructive feedback from students and teaching fraternity, as well as those changes that have been made in the syllabi and/or the pattern of examination papers of numerous universities. Knowledge updating is a never-ending process and so should be the revision of an effective textbook. The book originally written fifty years ago has, during the intervening period, been revised and reprinted several times. The authors have, however, been thinking, for the last few years that the book needed not only a thorough revision but rather a substantial rewriting. They now take great pleasure in presenting to the readers the twelfth, thoroughly revised and enlarged, Golden Jubilee edition of the book. The subject-matter in the entire book has been re-written in the light of numerous criticisms and suggestions received from the users of the earlier editions in India and abroad. The basis of this revision has been the emergence of new literature on the subject, the constructive feedback from students and teaching fraternity, as well as those changes that have been made in the syllabi and/or the pattern of examination papers of numerous universities. Knowledge updating is a never-ending process and so should be the revision of an effective textbook. The book originally written fifty years ago has, during the intervening period, been revised and reprinted several times. The authors have, however, been thinking, for the last few years that the book needed not only a thorough revision but rather a substantial rewriting. They now take great pleasure in presenting to the readers the twelfth, thoroughly revised and enlarged, Golden Jubilee edition of the book. The subject-matter in the entire book has been re-written in the light of numerous criticisms and suggestions received from the users of the earlier editions in India and abroad. The basis of this revision has been the emergence of new literature on the subject, the constructive feedback from students and teaching fraternity, as well as those changes that have been made in the syllabi and/or the pattern of examination papers of numerous universities. Some prominent additions are given below: 1. Variance of Degenerate Random Variable 2. Approximate Expression for Expectation and Variance 3. Lyapounov’s Inequality 4. Holder’s Inequality 5. Minkowski’s Inequality 6. Double Expectation Rule or Double-E Rule and many others