Hello!

I'm going to give a rough idea of the xhapter wise weightage for class 12th chemistry.

• Co-ordination Compounds = 3 marks
• General Principles & Processes of Isolation of Elements = 3 marks
• Polymers = 3 marks
• Chemistry in everyday life = 3 marks
• Solid state = 4 marks
• Organic Compounds Containing Nitrogen = 4 marks
• Biomolecules = 4 marks
• Haloalkanes & Haloarenes = 4 marks
• Alcohols, Phenols & Ethers = 4 marks
• Surface chemistry = 4 marks
• Electrochemistry = 5 marks
• Soultions = 5 marks
• Chemical Kinetics = 5 marks
• d & f-Block Elements = 5 marks
• Aldehydes, Ketones & Carboxylic Acids = 6 marks
• p-Block Elements = 8 marks

This is just a rough idea.

I hope this helps.