1. Who invented Atomic numbers ?

Answer: Moseley of Britain in 1913

2. Who invented Vitamin K ?

Answer: Doisy Dam of U.S.A. in 1938.

3. Who invented watch ?

Answer:

Peter Henlein invented the first portable time piece in 1504

4. Who invented DNA Structure ?

Answer: Crick(UK), Waston(US), Wilkins(UK) in 1951

5. Who invented Television ?

Answer:

John Logie Baird

6. Who invented Aeroplane

Answer: Orville & Wilbur Wright in 1903

7. Who invented Stethoscope ?

Answer: Laennec of French in 1819.