1. Who invented Laptop ?

Answer:

Adam Osborne in 1981.

2. Who invented Locomotive ?

Answer:

George Stephenson was first to buit steam locomotives.

3. Who invented Penicillin ?

Answer: Alexander Fleming of Britain in 1928.

4. Who invented Ball-Point Pen ?

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

5. Who invented Dynamo ?

Answer:

Hypolite Pixii of France in 1832

6. Who invented Periodic table ?

Answer:

Dmitri Mendeleev invented Periodic Table

7. Who invented Piano ?

Answer:

Bartolomeo Cristofori