1. Who invented Atomic numbers ?

Answer: Moseley of Britain in 1913

2. Who invented Stainless Steel ?

Answer: Harry Brearley of Britain in 1913.

3. Who invented Atomic theory ?

Answer: Dalton of Britain in 1803.

4. Who invented Bakelite ?

Answer: Leo H. Baekeland of Belgium in 1907.

5. Who invented Hydrogen bomb ?

Answer:

Edward Teller

6. Who invented watch ?

Answer:

Peter Henlein invented the first portable time piece in 1504

7. Who invented Vitamin A ?

Answer: Mc Collum and M.Davis of U.S.A. in 1913