1. Who invented Machine Gun ?

Answer:

Helge Palmcrantz, Swedish inventor and industrialist

2. Who invented Radar ?

Answer:

Sir Robert Watson-Watt

3. Who invented c language

Answer:

Dennis Ritchie

4. Who invented by Electric Lamp ?

Answer: Thomas Alva Edison of U.S.A. in 1879

5. Who invented Diesel Engine ?

Answer: Rudoff Diesel of Germany in 1895

6. Who invented Microphone ?

Answer:

Emile Berliner invented the first microphone in 1876.

7. Who invented Open Heart Surgery ?

Answer:

Dr. Daniel Hale Williams