1. Who invented DNA Structure ?

Answer: Crick(UK), Waston(US), Wilkins(UK) in 1951

2. Who invented Radar ?

Answer:

Sir Robert Watson-Watt

3. Who invented Neutron ?

Answer:

JAMES CHADWICK in 1932

4. Who invented Atomic theory ?

Answer: Dalton of Britain in 1803.

5. Who invented Machine Gun ?

Answer:

Helge Palmcrantz, Swedish inventor and industrialist

6. Who invented Java Language ?

Answer:

James Gosling

7. Who invented Stethoscope ?

Answer: Laennec of French in 1819.