1. Who invented Blood Transfusion ?

Answer: Jean-Baptiste Denys of France in 1625.

2. Who invented Neon Lamp ?

Answer:

Georges Claude who was a French engineer, chemist and inventor

3. Who invented Atomic theory ?

Answer: Dalton of Britain in 1803.

4. Who invented Vitamin K ?

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

5. Who invented Refrigerator ?

Answer:

Oliver Evans in 1805

6. Who invented Penicillin ?

Answer: Alexander Fleming of Britain in 1928.

7. Who invented Helicopter ?

Answer:

Igor Sikorsky