1. Who invented Helicopter ?

Answer:

Igor Sikorsky

2. Who invented Proton ?

Answer:

Ernest Rutherford

3. Who invented Bicyle ?

Answer: Kirkpatrick Macmillan of Britain.

4. Who invented Submarine ?

Answer:

John Philip Holland

5. Who invented Floppy disk ?

Answer: IBM in 1970

6. Who invented Aspirin ?

Answer:

Felix Hoffmann invented Aspirin

7. Who invented Hydrogen bomb ?

Answer:

Edward Teller