1. Who invented Blood Transfusion ?

Answer: Jean-Baptiste Denys of France in 1625.

2. Who invented Vitamin B1 ?

Answer:

Casimir Funk discovered in 1912

3. Who invented DNA Structure ?

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

4. Who invented Printing Press ?

Answer:

Johannes Gutenberg

5. Who invented Transistor ?

Answer: Bardeen, Shockley & Britain of U.S.A. in 1948

6. Who invented Steam Engine (Condenser)

Answer: James Watt of Britain in 1765

7. Who invented Atomic Bomb ?

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