Sure, I can guide you on how to get mock test papers in Hindi language for UPSC exam preparation. Here are some points to consider:

1. Importance of Mock Tests: Mock tests are crucial for UPSC exam preparation as they help you assess your strengths and weaknesses, identify areas that need improvement, and build confidence for the actual exam.

2. Availability of Hindi Mock Tests: There are several sources where you can find Hindi mock tests for UPSC preparation, such as:

- Online Coaching Websites: Many coaching websites offer mock tests in Hindi language, such as Unacademy, Byju's, and EduRev. You can subscribe to their courses to access these mock tests.

- Offline Coaching Centers: If you prefer offline coaching, you can join a coaching center that offers mock tests in Hindi language. You can search for such centers in your local area or city.

- Books and Study Material: Many books and study material for UPSC exam preparation also include mock tests in Hindi language. You can purchase these books from online or offline bookstores.

3. How to Choose the Best Mock Tests: While selecting mock tests, you should consider the following factors:

- Relevance: The mock tests should cover the topics and syllabus of UPSC exam.

- Difficulty Level: The mock tests should have varying difficulty levels, ranging from easy to moderate to hard, to prepare you for all types of questions.

- Time Management: The mock tests should have a time limit similar to the actual exam, to help you practice time management.

- Feedback and Analysis: The mock tests should provide feedback and analysis on your performance, highlighting your strengths and weaknesses.

4. Tips for Using Mock Tests Effectively: Here are some tips to make the most of mock tests:

- Take mock tests regularly, preferably once a week, to track your progress.

- Analyze your performance after each mock test, and work on improving your weak areas.

- Use mock tests to practice time management, and try to finish the test within the time limit.

- Take mock tests in a quiet and distraction-free environment, to simulate the actual exam conditions.

Overall, mock tests are an essential tool for UPSC exam preparation, and with the availability of Hindi mock tests, you can prepare for the exam in your preferred language. I hope this guide helps you in finding the best mock tests for your preparation.