Introduction:
When it comes to preparing for the CBSE Class 10 exams, reference books can be extremely helpful. They provide additional explanations, practice questions, and a deeper understanding of the topics. Here are some of the best reference books for CBSE Class 10:

1. NCERT Textbooks:
The NCERT textbooks are the core books recommended by CBSE for Class 10. They provide a comprehensive understanding of the subjects and cover the entire CBSE syllabus. It is essential to thoroughly study these books before referring to any other reference books.

2. RD Sharma Mathematics:
RD Sharma Mathematics is a highly recommended reference book for CBSE Class 10 students. It covers all the topics in a detailed and systematic manner. The book provides a wide range of practice questions with varying difficulty levels, along with step-by-step solutions.

3. Oswaal Question Banks:
Oswaal Question Banks are popular among students as they contain a vast collection of solved and unsolved questions. These books are designed according to the latest CBSE syllabus and include previous years' question papers, sample papers, and important exam-oriented questions. They also provide answers with detailed explanations.

4. Together with Science/Mathematics/Social Science:
The "Together with" series by Ratna Sagar is highly recommended for CBSE Class 10 students. These books consist of chapter-wise explanations, important questions, and solved examples. They also provide additional practice material and sample papers to enhance the students' understanding and exam preparation.

5. Xam Idea:
Xam Idea is another popular reference book for CBSE Class 10. It provides a comprehensive coverage of all the subjects and includes a variety of questions for practice. The book also includes previous years' question papers, sample papers, and concept maps for better understanding.

Conclusion:
While these reference books can be beneficial for CBSE Class 10 students, it is important to note that the NCERT textbooks should be the primary source of study. These reference books should be used as supplements to enhance understanding and practice. Students should choose the reference books that best suit their learning style and help them excel in their exams.