1. Who invented Locomotive ?

Answer:

George Stephenson was first to buit steam locomotives.

2. Who invented X-ray ?

Answer: W.K. Roentgen of Germany in 1895.

3. Who invented Electron ?

Answer: Thomson. J of Britain in 1897

4. Who invented Safety Pin ?

Answer: Walter Hunt of U.S.A. in 1849

5. Who invented Steam Engine (Piston)

Answer: Thomas Newcomen of Britain in 1712

6. Who invented Super Computer ?

Answer:

Seymour Cray

7. Who invented Nylon ?

Answer:

Wallace Carothers