This book on Science and Technology is meant for students preparing for the Preliminary and Main papers of the Civil Service Examinations. It covers all aspects of Science and Technology from basic to advanced level making it easier for students from non-science background to comprehend and retain. Keeping in line with the trend of the examination, there is great focus on Science and Technology and the recent developments and the related government schemes. Also there is emphasis on all international issues with respect to various sectors like Energy, Space, Defence, IPR, Particle Physics, Material Technology, Biotechnology and so on. This book thus delves into this important aspect of the examination in detail, providing aspirants with a ready made amalgamation of basic concepts intertwined with current developments in the various fields to equip them for the examination.