1. Who invented Machine Gun ?

Answer:

Helge Palmcrantz, Swedish inventor and industrialist

2. Who invented Electron ?

Answer: Thomson. J of Britain in 1897

3. Who invented Barometer ?

Answer: Evangelista Torricelli of Italy in 1644

4. Who invented Vitamin B1 ?

Answer:

Casimir Funk discovered in 1912

5. Who invented Optical Fibre ?

Answer:

Indian-born American physicist Narinder Kapany

6. Who invented Morphine ?

Answer: Friderich Sertumer of Germany in 1805

7. Who invented Neutron ?

Answer:

JAMES CHADWICK in 1932