1. Who invented Laptop ?

Answer:

Adam Osborne in 1981.

2. Who invented Steam Engine (Piston)

Answer: Thomas Newcomen of Britain in 1712

3. Who invented Penicillin ?

Answer: Alexander Fleming of Britain in 1928.

4. Who invented c language

Answer:

Dennis Ritchie

5. Who invented Hydrogen bomb ?

Answer:

Edward Teller

6. Who invented Helicopter ?

Answer:

Igor Sikorsky

7. Who invented Submarine ?

Answer:

John Philip Holland