1. Who invented Java Language ?

Answer:

James Gosling

2. Who invented Helicopter ?

Answer:

Igor Sikorsky

3. Who invented Stethoscope ?

Answer: Laennec of French in 1819.

4. Who invented Steam Engine ?

Answer: Thomas Savery of Britain in 1698

5. Who invented Optical Fibre ?

Answer:

Indian-born American physicist Narinder Kapany

6. Who invented Super Computer ?

Answer:

Seymour Cray

7. Who invented Nylon ?

Answer:

Wallace Carothers