1. CBSE Board Papers Vs NCERT Books: Suffice the need to gauge the syllabus
These books are more than enough for you to cover the entire CBSE syllabus. You need to clarify your concepts that are given in the NCERT books. This will help you understand the questions in detail and with a thorough understanding.
2. Understand the application of concepts in NCERT books
Many times CBSE will ask twisted questions in the board exam papers. The students who simply mugged up NCERT books would think that the paper was out of these books. However, one needs to understand that by studying NCERT books, CBSE means that you should clarify your concepts and learn how to apply them.
3. Practice variety to crack CBSE boards
In NCERT books, you will see questions at the end of chapters. These can be one-liners, quizzes, match-the-following, descriptive or fill-in-the-blanks questions. To score well in the board exams, it is absolutely important that you practice a variety of questions. By variety, you will get to know the twisted questions as well.
4. Understand the NCERT fundamentals
A CBSE question paper vs. NCERT books is a debatable scenario. But the truth is that CBSE questions are always based on the fundamentals of NCERT. You should carefully read between the lines and understand what they are trying to explain. Once your concepts are clear, you will be able to write your exam appropriately.
5. NCERT books are a base for the test preparations as well
All major India-level examinations, such as JEE, AIEEE and CAT are based on the NCERT books. Even the UPSC examinations are based on NCERT books. No matter what career you wish to choose after 12th class, it is very important and compulsory to study the NCERT Books to clear your concepts and form a strong base. CBSE exams are a kind of preliminary test for your future career choices. That is why NCERT books should be chosen and made mandatory to clear the base.
So basically, it would not be wrong to say that CBSE board papers are application based and for that, a student should have a strong and clear foundation. This can be done only by studying NCERT books.