Yes, you can absolutely clear CLAT with a PCB (Physics, Chemistry, Biology) stream as the exam doesn’t require specific subject prerequisites from Class 12. CLAT tests general aptitude, logical reasoning, legal reasoning, English comprehension, and current affairs, none of which depend on your stream choice. Students from Science, Commerce, and Arts backgrounds all compete on equal footing, so your PCB background won’t disadvantage you as long as you prepare well for the exam format.