1. Who invented X-ray ?

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

2. Who invented colour television ?

Answer:

Peter Carl Goldmark

3. Who invented Chloroform as anaesthetic ?

Answer: James Simpson of Britain in 1847.

4. Who invented Computer ?

Answer:

Charles Babbage

5. Who invented Ball-Point Pen ?

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

6. Who invented Steam Engine ?

Answer: Thomas Savery of Britain in 1698

7. Who invented Floppy disk ?

Answer: IBM in 1970