I am not use any other publication like marvel,Arihant ,mtg I solve only 40 sample paper to score 150+

Hii Shubham

This is Shalini.

It's not too much important to solve books of any other publications as sample paper is a collections of variety of questions.I think all the sample paper contains question regarding to your syllabus.The only difference is level of question.But don't worry if you had completed approximately 40 sample paper and all the concepts are in your mind then sure you will get 150+ marks.Also your marks depends on the level of question.So don't be scared.Give your best.you will surely score 150+ marks.

Hope this answer will improve your confidence level.

Thank you.

All the best!