1. Who invented Neutron bomb ?

Answer:

Samuel T. Cohen

2. Who invented Periodic table ?

Answer:

Dmitri Mendeleev invented Periodic Table

3. Who invented Safety Pin ?

Answer: Walter Hunt of U.S.A. in 1849

4. Who invented Computer ?

Answer:

Charles Babbage

5. Who invented Piano ?

Answer:

Bartolomeo Cristofori

6. Who invented Printing Press ?

Answer:

Johannes Gutenberg

7. Who invented Transistor ?

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