No it is like a cheating, if you think that the questions will came from ncert it is a blunder you know what ,the questions will came on the basis of ncert not only from ncert so be aware and start doing side book like R. D sharma, Rs aggarwal etc

Importance of NCERT Mathematics Textbook
When preparing for board exams, especially in the CBSE curriculum, the NCERT mathematics textbook is a crucial resource. However, relying solely on it may not be sufficient.
Why NCERT is Essential
- The NCERT textbook covers the entire syllabus prescribed by CBSE.
- Questions in board exams are often derived directly from these textbooks.
- It provides clear explanations and examples, making fundamental concepts easier to grasp.
Supplementary Resources
- Reference Books: Use additional reference books for varied problem-solving techniques and more challenging questions.
- Previous Year Papers: Solving past years' question papers helps understand the exam pattern and frequently asked questions.
- Sample Papers: Practicing sample papers can enhance time management skills during the exam.
Practice Variety
- Diverse Question Types: Relying only on NCERT may limit exposure to different types of problems. Engage with various sources to gain a broader perspective.
- Mock Tests: Regularly take mock tests to evaluate your preparation and identify areas needing improvement.
Conclusion
While the NCERT textbook is essential for board exam preparation, it’s advisable to incorporate a variety of resources. This approach ensures a well-rounded understanding of mathematics and better prepares you for the exam. For additional study materials and resources, consider platforms like EduRev, which offer a plethora of practice questions and tutorials.