1. Who invented Bleaching Powder ?

Answer: Tennant of Britain in 1798

2. Who invented colour television ?

Answer:

Peter Carl Goldmark

3. Who invented Vaccine of Rabies ?

Answer: Louis Pasteur of France in 1885

4. Who invented Transistor ?

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

5. Who invented Piano ?

Answer:

Bartolomeo Cristofori

6. Who invented Laptop ?

Answer:

Adam Osborne in 1981.

7. Who invented Ballistic missile ?

Answer: Wemher von Braun of Germany in 1944.