1. Who invented Nylon ?

Answer:

Wallace Carothers

2. Who invented Steam Engine (Condenser)

Answer: James Watt of Britain in 1765

3. Who invented Helicopter ?

Answer:

Igor Sikorsky

4. Who invented c language

Answer:

Dennis Ritchie

5. Who invented Bicyle ?

Answer: Kirkpatrick Macmillan of Britain.

6. Who invented Transistor ?

Answer: Bardeen, Shockley & Britain of U.S.A. in 1948

7. Who invented Circulation of blood ?

Answer: William Harvey of Britain in 1628