1. Who invented Ball-Point Pen ?

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

2. Who invented Helicopter ?

Answer:

Igor Sikorsky

3. Who invented Nylon ?

Answer:

Wallace Carothers

4. Who invented Super Computer ?

Answer:

Seymour Cray

5. Who invented google ?

Answer:

Larry Page

6. Who invented Aeroplane

Answer: Orville & Wilbur Wright in 1903

7. Who invented Steam Engine (Condenser)

Answer: James Watt of Britain in 1765