1. Who invented Chemotherapy ?

Answer: Paracelsus of Switzerland

2. Who invented Refrigerator ?

Answer:

Oliver Evans in 1805

3. Who invented Vitamin K ?

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

4. Who invented Neutron ?

Answer:

JAMES CHADWICK in 1932

5. Who invented Computer ?

Answer:

Charles Babbage

6. Who invented Atomic Bomb ?

Answer: J. Robert Oppenheimer of U.S.A. in 1945

7. Who invented Piano ?

Answer:

Bartolomeo Cristofori