Dear Ritesh,

Thank you for your query. The following are the syllabus for PCM in Bihar Board syllabus 2020-2021:

• Physics:Electrostatic,Current Electricity,Electro-Magnetism,AC and Electromagnectic Induction,Electromagnetic Waves,Optics
• Chemistry:State of Matter,Solutions, Electrochemistry,Chemical Kinectics, Organic Chemistry,Surface Chemistry
• Maths:Relations and Functions, Algebra,Calculus, 3D geometry,Linear Programming, Probaility.
• English: Grammar, Vocabulary, Stories

https://school.careers360.com/articles/bihar-board-12th-syllabus

All the best