1. Who invented Electron ?

Answer: Thomson. J of Britain in 1897

2. Who invented Transistor ?

Answer: Bardeen, Shockley & Britain of U.S.A. in 1948

3. Who invented Blood Transfusion ?

Answer: Jean-Baptiste Denys of France in 1625.

4. Who invented Aeroplane

Answer: Orville & Wilbur Wright in 1903

5. Who invented by Electric Lamp ?

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

6. Who invented Optical Fibre ?

Answer:

Indian-born American physicist Narinder Kapany

7. Who invented Bakelite ?

Answer: Leo H. Baekeland of Belgium in 1907.