1. Who invented Steam Engine (Condenser)

Answer: James Watt of Britain in 1765

2. Who invented Transistor ?

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

3. Who invented Floppy disk ?

Answer: IBM in 1970

4. Who invented Open Heart Surgery ?

Answer:

Dr. Daniel Hale Williams

5. Who invented Bakelite ?

Answer: Leo H. Baekeland of Belgium in 1907.

6. Who invented Television ?

Answer:

John Logie Baird

7. Who invented Neutron bomb ?

Answer:

Samuel T. Cohen