1. Who invented Helicopter ?

Answer:

Igor Sikorsky

2. Who invented Hydrogen bomb ?

Answer:

Edward Teller

3. Who invented Ball-Point Pen ?

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

4. Who invented Floppy disk ?

Answer: IBM in 1970

5. Who invented Transformer ?

Answer:

Ottó Bláthy

6. Who invented Television ?

Answer:

John Logie Baird

7. Who invented Vaccine of Rabies ?

Answer: Louis Pasteur of France in 1885