1. Who invented Vitamin K ?

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

2. Who invented Stethoscope ?

Answer: Laennec of French in 1819.

3. Who invented Bicyle ?

Answer: Kirkpatrick Macmillan of Britain.

4. Who invented Calculus ?

Answer: Newton of Britain in 1670.

5. Who invented DNA Structure ?

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

6. Who invented Neutron ?

Answer:

JAMES CHADWICK in 1932

7. Who invented Television ?

Answer:

John Logie Baird