1. Who invented Radar ?

Answer:

Sir Robert Watson-Watt

2. Who invented paper ?

Answer:

Cai Lun

3. Who invented Steam Engine (Condenser)

Answer: James Watt of Britain in 1765

4. Who invented Television ?

Answer:

John Logie Baird

5. Who invented Vitamin D ?

Answer:

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

6. Who invented Microphone ?

Answer:

Emile Berliner invented the first microphone in 1876.

7. Who invented Ballistic missile ?

Answer: Wemher von Braun of Germany in 1944.