I am a science stream student and wanted to prepare for UPSC CS . so, is it possible to change subject to arts in graduation. please help me

Dear

If you have target for Upsc exam than you can opt any of the these option as bachelor degree from arts or commerce

Pol science
History
Law
Psychology
Philosophy
Economics Hons
Sociology

But according.to me you should pursue professional degree as plan B if you are not able to crack the exam than you can start your career with the professional degree.

All the Best