Teaching Railway Teacher PRT 2025 Mock Test Series General Knowledge Defence

ଭାରତର ମହାକାଶ କାର୍ଯ୍ୟକ୍ରମର ଏକ ଗୁରୁତ୍ୱପୂର୍ଣ୍ଣ ଉପାଦାନ ବିକାଶ ଇଞ୍ଜିନ୍ କିଏ ବିକଶିତ କଲା?

1
DRDO
2
ଅନ୍ତରିକ୍ଷ
3
HAL
4
ISRO
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