Finding mock test papers for philosophy of mind and body topics can be a challenging task, but there are several resources available that can help you in your search. Here are some suggestions:

1. Online Forums and Discussion Boards:
- Reddit: Reddit has various communities dedicated to philosophy where you can find discussions, study materials, and even mock test papers. Some popular subreddits include r/philosophy and r/askphilosophy.
- Quora: Quora has a dedicated section for philosophy where you can ask questions and find resources shared by experts and enthusiasts.

2. Educational Websites:
- EduRev: EduRev is a comprehensive educational platform that offers a wide range of study materials, including mock test papers for philosophy of mind and body topics. They have a dedicated section for UPSC preparation, where you can find relevant resources.

3. University Websites:
- Many universities provide access to past exam papers and study materials on their websites. Check the philosophy department's page on the university website for any available resources.

4. Online Libraries:
- Project Gutenberg: Project Gutenberg is a digital library that offers over 60,000 free eBooks. Although they may not have specific mock test papers, you can find philosophical works related to the mind and body topics that can help you in your preparation.

5. Online Study Groups:
- Facebook Groups: Joining Facebook groups dedicated to philosophy can provide you with access to study materials and discussions. Search for groups related to philosophy of mind and body topics and request to join.

6. Online Courses:
- Coursera: Coursera offers various philosophy courses that cover topics related to the mind and body. These courses often include quizzes and assignments that can serve as mock test papers.

Remember to use these resources responsibly and focus on reputable sources to ensure the accuracy and quality of the mock test papers. Additionally, it is recommended to consult your syllabus or course material to identify specific topics to focus on while searching for mock test papers.