1. Who invented Refrigerator ?

Answer:

Oliver Evans in 1805

2. Who invented Electron ?

Answer: Thomson. J of Britain in 1897

3. Who invented Stainless Steel ?

Answer: Harry Brearley of Britain in 1913.

4. Who invented paper ?

Answer:

Cai Lun

5. Who invented HIV ?

Answer:

6. Who invented Locomotive ?

Answer:

George Stephenson was first to buit steam locomotives.

7. Who invented Atomic numbers ?

Answer: Moseley of Britain in 1913