1. Who invented Bicyle ?

Answer: Kirkpatrick Macmillan of Britain.

2. Who invented Machine Gun ?

Answer:

Helge Palmcrantz, Swedish inventor and industrialist

3. Who invented Laptop ?

Answer:

Adam Osborne in 1981.

4. Who invented Automatic rifle ?

Answer: John Browning of U.S.A. in 1918.

5. Who invented Penicillin ?

Answer: Alexander Fleming of Britain in 1928.

6. Who invented Hydrogen bomb ?

Answer:

Edward Teller

7. Who invented Steam Engine (Piston)

Answer: Thomas Newcomen of Britain in 1712