“Directorate of Government Examinations, Tamilnadu has recently released the Official Answer Keys for NTSE 2019 Stage-1 Exam on its Official Website.”
NTSE Stage-1 2019 exam was held on 4th Nov. 2018 at various centers in Tamilnadu State.
You can match your answer key with the respective official key.
Check MAT and SAT Answer Keys for NTSE Stage 1 here:
Click Here for NTSE 2019 Stage-1 MAT Answer Key