https://www.9curry.com/answer-keys/21999a BPSC AE Mechanical Pre Final Answer Key 2019 Published: March 14, 2019 5:02am | Updated: August 30, 2019 11:33pm by GuRu Kumawat BPSC AE Mechanical Pre Final Answer Key 2019: Bihar Public Service Commission has issued the Answer Key on 13 Mar 2019 for AE Mechanical Pre Final Exam 2018. Answer Key can be accessed from the link given below. Issued on: 13 Mar 2019