The PSIR (Political Science and International Relations) optional course can be studied in both English and Hindi languages. It is offered in multiple languages to cater to the diverse needs of UPSC (Union Public Service Commission) aspirants.

Sleepy Classes on EduRev is a popular platform for UPSC preparation, including PSIR optional. It provides comprehensive and quality study materials, video lectures, and other resources to help students excel in their chosen subjects. Here are the details of studying PSIR optional with Sleepy Classes on EduRev:

1. Study Materials:
- Sleepy Classes on EduRev offers well-structured and detailed study materials for PSIR optional. These materials cover the entire syllabus and are designed to provide a strong foundation in the subject.
- The study materials include notes, summaries, and important concepts, making it easier for students to grasp the content effectively.

2. Video Lectures:
- Sleepy Classes on EduRev provides video lectures on PSIR optional, delivered by experienced faculty members. These lectures offer in-depth explanations of complex topics and help students understand the subject better.
- The video lectures are designed to be engaging and interactive, ensuring that students stay motivated and focused while studying.

3. Practice Questions and Mock Tests:
- To enhance the learning experience, Sleepy Classes on EduRev offers a wide range of practice questions and mock tests for PSIR optional.
- These practice questions help students test their knowledge and identify areas where they need improvement. The mock tests simulate the actual UPSC exam environment, allowing students to gauge their exam readiness.

4. Discussion Forum:
- EduRev provides a discussion forum where students can interact with peers and faculty members to clarify doubts, share study materials, and engage in meaningful discussions related to PSIR optional.
- This platform fosters a collaborative learning environment, where students can benefit from the diverse perspectives and insights of others.

In conclusion, Sleepy Classes on EduRev offers a comprehensive platform for studying PSIR optional. With its study materials, video lectures, practice questions, and discussion forum, students can effectively prepare for the UPSC exam and excel in their chosen subject.