Hi

It's okay even if you have wasted your class 11th , you can definitely score 80% or more in your ISC PCM but yes if you have not studied class 11th well it will be a little bit difficult for you as class 11th is the base of class 12th but don't worry with hard work and systematic study you can definitely score well like 80% or more.

Follow the below tips:-

*For physics, practice all the derivations from time to time as there are chances of forgetting them if you don't revise them, derivations are very often asked in your board exam, go through solved examples and then go for unsolved numerical

*For chemistry go through all the solved examples and intext and exercise questions , in organic chemistry focus more on name reactions there are two questions from name reaction each year in board examination and many questions are based on them directly

*For mathematics, practice is the key , the more you practice the more you get good at maths

*Make short notes of important concepts and formulas for each chapter


*Go through previous 10 year board examination question papers as concepts are often repeated in board exam so it will be of great help in your preparation


*Once you are done with your complete board examination syllabus go through at least 3-5 mock test papers in each subject


Thank you