To prepare for the CLAT UG exam while being in Class 12 with a PCB (Physics, Chemistry, Biology) background, you should focus on developing your skills in areas outside your regular curriculum, as the CLAT syllabus includes subjects like English Language , Current Affairs and General Knowledge (GK) , Legal Reasoning , Logical Reasoning , and Quantitative Techniques . Start by enhancing your English proficiency through regular reading of newspapers such as The Hindu for current affairs and general knowledge, while improving grammar with books like Wren & Martin and vocabulary with Word Power Made Easy . Since you already have a scientific mindset, focus on strengthening your Logical Reasoning skills using books like R.S. Aggarwal’s "A Modern Approach to Logical Reasoning" and practice puzzles and analytical reasoning . For Legal Reasoning , familiarize yourself with basic legal concepts, such as contracts and constitutional law, through resources like "Legal Aptitude for CLAT" by A.P. Bhardwaj . Given your background in science, you’ll likely find the Quantitative Techniques section more approachable, so continue practicing basic arithmetic , percentages , and data interpretation through resources like R.S. Aggarwal’s Quantitative Aptitude . Additionally, staying updated with current affairs through apps like GK Today or LegalEdge is essential, and refer to Manorama Yearbook for static GK. Most importantly, practice regularly with mock tests and previous years’ CLAT papers to build speed, accuracy, and familiarity with the exam format. Balancing CLAT preparation with 12th board studies requires a disciplined approach, so create a well-structured study schedule to manage both effectively. By strategically focusing on these areas, you can perform well in the CLAT UG exam and make the most of your scientific background.