The book has been designed keeping in mind the specific requirements of aspirants of Indian Railway jobs the recruitment of which is done by RRB. General science comprises a very important section in the RRB examination for the GS paper. This book completely covers the syllabus. It also has enough exercises for practice to boost the confidence of the aspirants. NCERT-Based theory for Physics, Chemistry, Life Sciences and Environmental Studies. 1140 exercise questions for practice, presented at the end of the chapters. Profusely illustrated with diagrams and flowcharts, for ease of understanding. Simple language for ease of understanding by students with non-science background.