The present book has been specially published for the aspirants of ‘Laboratory–Assistant, Technician & Attendant Recruitment Exam’ conducted by DSSSB. The book, prepared by experts, is highly recommended to study and 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. The book comprises Specialised Study and Practice Material with Solved Previous Paper to make you familiar with the exam pattern, the type of questions asked and their answers. Practice-questions have been modelled on the basis of questions asked in previous exam papers and solved by respective subject-experts with due diligence. Detailed Explanations have also been provided by experts for Selected Questions. The book will prove very useful for study, practice and during precious moments before the exam. While the specialised study and practice material of this book has been aimed to prepare you for Sure Success in the exam, your own intelligent study and practice, in harmony with this, will definitely Ensure you a Bright Career.