The CBSE Class 10 board exams consist of multiple papers that assess students' knowledge and understanding of various subjects. Let's break down the number of papers and subjects covered in the CBSE Class 10 board exams:

1. Core Subjects:
- English: There is only one paper for English, which includes sections on reading comprehension, grammar, writing skills, and literature.
- Hindi: Similarly, there is one Hindi paper that assesses the students' understanding of Hindi language and literature.

2. Mathematics:
- The Mathematics paper is divided into two parts: Part A and Part B.
- Part A: It consists of questions based on the prescribed syllabus, which assesses the students' knowledge and understanding of mathematical concepts.
- Part B: It is an internal assessment that evaluates the students' ability to solve real-life mathematical problems and analyze data.

3. Science:
- The Science paper is divided into three main sections: Physics, Chemistry, and Biology.
- Each section comprises questions based on the respective subject's syllabus, covering topics like force, energy, chemical reactions, atoms, cells, etc.

4. Social Science:
- The Social Science paper covers subjects like History, Geography, Civics, and Economics.
- The paper includes questions from each of these subjects, testing the students' knowledge of historical events, geographical features, political systems, and economic concepts.

5. Additional Subjects:
- In addition to the core subjects, students can choose an optional subject based on their interests and career aspirations.
- The optional subjects may include Computer Science, Physical Education, Home Science, Fine Arts, etc.
- The number of papers for optional subjects may vary depending on the subject chosen.

Overall, the CBSE Class 10 board exams consist of papers in subjects like English, Hindi, Mathematics, Science, Social Science, and optional subjects. The number of papers may vary based on the chosen optional subject, but typically students have to appear for a minimum of five to six papers. It is important for students to thoroughly prepare for each subject and understand the exam pattern to perform well in the board exams.