1. Who invented Refrigerator ?

Answer:

Oliver Evans in 1805

2. Who invented Vitamin K ?

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

3. Who invented Atomic Bomb ?

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

4. Who invented Biochemistry ?

Answer: Jan Baptista Van Helmont of Belgium in 1648.

5. Who invented Atomic theory ?

Answer: Dalton of Britain in 1803.

6. Who invented CT scan ?

Answer: Hounsfield by Britain in 1973.

7. Who invented Blood Transfusion ?

Answer: Jean-Baptiste Denys of France in 1625.