The ISRO Centralised Recruitment Board (ICRB) has released the revised answer keys for the ISRO Scientist Engineer Exam held on 7 May 2017.
The exam was held for recruitment into the following departments:

The test comprised of 90 MCQ's for Scientist/ Engineer post in Electronics, Mechanical and Computer Science. The remaining posts had 80 questions. The questions in the written exam are framed according to the discipline that candidates hail from and the posts that they are applying for.
In order to check the revised answer keys for the ISRO Scientist Engineer Exam 2017, follow the procedure given below:
Initially, the tentative answer keys were released for the written exam that was the 1st phase of the selection procedure. The organising body had opened the forum for candidates to raise objections and challenge the first set of the released answer keys. After considering the objections, ISRO has now released the revised set of answer keys. Now, the next phase is the ISRO interview, which will be held after the results are announced.