1. Who invented Ballistic missile ?

Answer: Wemher von Braun of Germany in 1944.

2. Who invented Radiocarbon ?

Answer:

Willard Libby

3. Who invented Steam Engine (Piston)

Answer: Thomas Newcomen of Britain in 1712

4. Who invented Radar ?

Answer:

Sir Robert Watson-Watt

5. Who invented Helicopter ?

Answer:

Igor Sikorsky

6. Who invented Aeroplane

Answer: Orville & Wilbur Wright in 1903

7. Who invented Vitamin D ?

Answer:

Edward Mellanby discovered Vitamin D while researching a disease called rickets in 1922