You didn't mentioned the name of the examination for which you are asking the chapterwise weightage. I am providing here the chapter wise weightage of the JEE MAINS, JEE ADVANCED & NEET examination. If you need the chapterwise weightage for any other examination then repost the question with the name of the college so that we can understand what you want to know.

For JEE MAINS chapterwise weightage visit the link below:

https://engineering.careers360.com/articles/jee-main-syllabus-weightage

For the JEE ADVANCED Chapterwise weightage, visit the link below:

https://engineering.careers360.com/articles/jee-advanced-syllabus-weightage

For the NEET Chapter wise weightage, visit the link below:

https://medicine.careers360.com/articles/neet-chapter-wise-weightage-and-important-topics

I hope this answer helps. All the very best for your future endeavors!

Hey!

It seems like you have asked an incomplete question. You haven't mentioned the reference, that is, the exam for which you want to know the weightage of chemistry and maths. It is vague as it can be referring to your 12th board exams or other entrance exams which include these subjects. So, in order to remove the ambiguity, you may write the details in the comment section so that it can be answered accordingly. You can even repost your question with adequate details.