1. Who invented Vitamin K ?

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

2. Who invented colour television ?

Answer:

Peter Carl Goldmark

3. Who invented watch ?

Answer:

Peter Henlein invented the first portable time piece in 1504

4. Who invented Ball-Point Pen ?

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

5. Who invented Radar ?

Answer:

Sir Robert Watson-Watt

6. Who invented Atomic theory ?

Answer: Dalton of Britain in 1803.

7. Who invented Periodic table ?

Answer:

Dmitri Mendeleev invented Periodic Table