1. Importance of NCERT books for UPSC:
Foundation: NCERT books provide a solid foundation for basic concepts across various subjects.
Accuracy: The information in these books is accurate and aligned with the UPSC syllabus.
Simple language: The content is presented in clear, concise language, making it easier to understand complex topics.
Cost-effective: These books are affordable compared to other study materials.

2. Recommended NCERT books for UPSC:
History: Class 6 to 12 NCERT History books
Geography: Class 6 to 12 NCERT Geography books
Polity: Class 9 to 12 NCERT Political Science books
Economics: Class 9 to 12 NCERT Economics books
Science: Class 6 to 10 NCERT Science books

3. How to use NCERT books for UPSC preparation:
Read thoroughly: Go through the books multiple times to grasp the concepts well.
Make notes: Create concise notes while reading to aid revision.
Practice questions: Solve the questions given at the end of each chapter.
Connect topics: Try to establish connections between different subjects and topics.
Use as a base: Build upon the NCERT knowledge with more advanced study materials.

4. Additional tips:
Focus on NCERT books of classes 6 to 12 for a comprehensive understanding.
Pay special attention to maps, diagrams, and tables in these books.
Use NCERT books in conjunction with the UPSC syllabus to ensure complete coverage.