Objective Science & Technology is an ideal preparatory tool for the aspirants of Civil Services Preliminary Examination. This revised edition Includes some fresh objective questions on various aspects of scientific S advancements and technological innovations. The questions are application based; so as to let aspirants identify their core strengths and work on areas of improvement. Key Features Question level as per the UPSC & state services exam pattern Questions incorporated from various segments viz Science & Technology. Biology, Physics and Chemistry, Detailed explanations to selected questions