Dear student,

I hope you are doing well. About your question the portion for 12th class chemistry.

• Solid state
• Solution
• Electrochemistry

The above Chapters will have a total weight of 23 Mark's

• Chemical kinetics
• Surface chemistry
• General Principles and Processes of Isolation of Elements
• P block element
• d And f block element

19 Mark's for these 5 chapters

• Coordination Compounds
• Haloalkanes and Haloarenes
• Alcohols, Phenols and Ethers Aldehydes,
• Ketones and Carboxylic Acids
• Organic compounds containing Nitrogen
• Polymers
• Chemistry in everyday life

The rest comprise of 28 Mark's , grand total 70 marks for this theory paper in chemistry.

https://school.careers360.com/articles/odisha-chse-syllabus

Refer the link below for more details portion outline for concepts covered in each chapter.

Hope this helps answer your boards well.