Hello dear student,

As you have asked this question in regarding to aiims ug so dear student for your information firstly I would like to tell you that aiims ug have been scrapped off from the shevles and now there won't be aiims ug exam that will be conducted seprately . Now nta will be conducting one exam which is neet ug and it will the common entrance test for all Medical aspirants .

And now as you asked about the weightage of the chapters so dear student weightage of chapters never remains the same it slightly changes every year . Its a competitive exam how can you expect a fixed number of questions to be asked from every chapter every year . I hope this was helpful to you

Thank you and best wishes