1. Who invented Stainless Steel ?

Answer: Harry Brearley of Britain in 1913.

2. Who invented Refrigerator ?

Answer:

Oliver Evans in 1805

3. Who invented paper ?

Answer:

Cai Lun

4. Who invented google ?

Answer:

Larry Page

5. Who invented Electron ?

Answer: Thomson. J of Britain in 1897

6. Who invented Open Heart Surgery ?

Answer:

Dr. Daniel Hale Williams

7. Who invented Aspirin ?

Answer:

Felix Hoffmann invented Aspirin