To find UPSC comprehension practice questions, you can explore various sources, both online and offline. Here are some places where you can find comprehension practice questions for UPSC exams:

1. Official UPSC Website: The UPSC's official website often provides sample question papers and practice materials for various exams, including the Civil Services Examination (CSE). You can check the "Examination" or "Question Papers" section on their website for official practice materials.

2. UPSC Exam Preparation Websites: Several websites and online platforms that specialise in UPSC exam preparation offer comprehension practice questions and mock tests. Some popular ones include ClearIAS, InsightsIAS, and BYJU's. These platforms often provide free and paid practice materials.

3. Standard UPSC Preparation Books: Many standard UPSC preparation books, especially those focusing on General Studies (GS) and English comprehension, include practice questions for comprehension passages. Look for books recommended by UPSC to ensure the quality of content.

4. Coaching Institutes: If you are enrolled in a UPSC coaching institute, they typically provide comprehensive study materials, including comprehension practice questions. Check with your institute for the resources they offer.

5. Online Forums and Communities: Join online forums and discussion communities where UPSC aspirants share study materials and resources. Websites like Reddit, Quora, and dedicated UPSC preparation forums often have members who share practice questions and tips.

6. Current Affairs Magazines: Magazines like "The Hindu," "Yojana," "Kurukshetra," and "Frontline" often include comprehension passages related to current affairs. Practicing with these passages can help improve your comprehension skills.

7. Previous Year Question Papers: Previous year's UPSC question papers often contain comprehension passages in the General Studies (GS) paper. Solving these papers will give you a good understanding of the type of passages and questions that appear in the exam.

8. Online Mock Test Platforms: Many online mock test platforms, such as those mentioned above, offer dedicated mock tests for comprehension passages. These can be useful for timed practice and assessment of your comprehension skills.

9. Self-prepared Materials: Create your own comprehension practice materials by selecting articles or passages from newspapers, magazines, or online sources and crafting questions based on them. This can be a personalized and effective way to practice.