1. Who invented Penicillin ?

Answer: Alexander Fleming of Britain in 1928.

2. Who invented Ball-Point Pen ?

Answer: John J. Loud of U.S.A. in 1888

3. Who invented Machine Gun ?

Answer:

Helge Palmcrantz, Swedish inventor and industrialist

4. Who invented Neon Lamp ?

Answer:

Georges Claude who was a French engineer, chemist and inventor

5. Who invented Optical Fibre ?

Answer:

Indian-born American physicist Narinder Kapany

6. Who invented Steam Engine ?

Answer: Thomas Savery of Britain in 1698

7. Who invented Aeroplane

Answer: Orville & Wilbur Wright in 1903