Agnibaan SOrTeD, launched by Agnikul Cosmos, was the world's first rocket with:
- Aan electric propulsion engine
- Ba reusable first stage
- Ca methane–oxygen engine
- Da single-piece 3D-printed engine
Show answer and explanation
Correct answer: (d) a single-piece 3D-printed engine
Explanation
Its Agnilet engine was 3D-printed in one piece.