Hi

Which stream are you from dear?

Anyway,

To score well in ipe / 12th cbseboard. NCERT books are the best books as cbse board follows NCERT . I have complered  my 12th from CBSE board and I had followed NCERT books and  got 90.2 % . More than books what matters is the way you follow it. You should go thoroughly  through NCERT.

Also,

You can go for reference books for the subjects in which you face difficulty in clearing your concepts from NCERT.

For example,

I had PCMB in my 12th  and I had used reference book only for physics as I found it difficult to understand concepts from NCERT and except physics I had studied all the other subjects from NCERT .

And the most important thing to score well in CBSE board examination is to practice previous 10 year question paper, you can go for chapterwise previous 10 year paper books by Arihant, personally I had used it during my 12th.

Follow the given below tips to score well in your board examination :-

---------) Go well through your textbooks

---------) While reading the book, underline the important points and then later make short notes

---------) Do go through the questions at the end of the chapter, just reading is not going to help.

---------) Follow a routine, it should be such that it moves around 3 important things i. e first studying, then practicing questions and finally revision.

---------) Focus relatively more on your weak subject so that you can make them strong

---------) Have daily, weekly and monthly goals like you will complete these topics today , these chapter by the end of the week and these many chapters by the end of the month

---------) Be practical in your approach. For example, if you need 4 days to complete a chapter but you plan to finish it in 1 day from scratch then that's not going to help you, at  the end of the day it will give you disappointment and down your morale, so be practical.

---------) Complete your syllabus at least 1 month before your board examination so that you can give it for revision and practicing questions

---------) solve previous year question papers :- it will be really of great help to you because you will know what type of questions are asked in the exam, their difficulty level , examination pattern etc

---------) Go through chapterwise and unitwise test and once you're done with the complete syllabus ,go through full mock test papers. And do at least 5-10 full mock test papers in each subject.

---------) practicing days full mock test papers will let you know the level of your preparation for your board examination .

---------) after each mock test analyse your performance to know your mistakes / weak areas , after that you need to work on improving them in the subsequent mock tests .

I hope that you find this helpful.

Thank you