The 9th edition of Science and Technology by Ravi P. Agrahari continues to be a trusted resource for UPSC and State Civil Services aspirants. Presented as comprehensive courseware by McGraw Hill, it offers a holistic learning experience aligned with evolving exam patterns. This edition features 60+ conceptual videos, chapter-wise prelim and mains PYQs with video explanations, 11 practice tests, 80+ infographics, author webinars, and quarterly current affairs updates?making it a complete, adaptive preparation tool for aspirants