Dear Friends, We are releasing the UPSC CSE Prelims 2021 GS Paper 1 answer key for all Sets A, B, C, D. Note: In case, you find any error in the key, you can report the same either in the comment box or through email to ravi@forumias.com To watch UPSC CSE Prelims Question Paper discussion… Continue reading UPSC CSE Prelims 2021 GS Paper 1 | Answer key | Set A, B, C, D