UPSC PSIR OPTIONAL SYLLABUS-BEST PSIR OPTIONAL BOOKS AND NOTES BY TOPPERS
UPSC PSIR Optional Syllabus | Best PSIR Optional Books and Notes by Toppers The UPSC exam is conducted in three parts which are divided into Prelims, Mains and Interview. After passing the prelims exam of UPSC Civil Services, the candidates must clear the mains exam also. Candidates have the option to choose any one of the 48…