1. Who invented Machine Gun ?

Answer:

Helge Palmcrantz, Swedish inventor and industrialist

2. Who invented Morphine ?

Answer: Friderich Sertumer of Germany in 1805

3. Who invented Bicyle ?

Answer: Kirkpatrick Macmillan of Britain.

4. Who invented Hydrogen bomb ?

Answer:

Edward Teller

5. Who invented Aeroplane

Answer: Orville & Wilbur Wright in 1903

6. Who invented Open Heart Surgery ?

Answer:

Dr. Daniel Hale Williams

7. Who invented Blood Transfusion ?

Answer: Jean-Baptiste Denys of France in 1625.