1. Who invented Machine Gun ?

Answer:

Helge Palmcrantz, Swedish inventor and industrialist

2. Who invented DNA Structure ?

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

3. Who invented Aeroplane

Answer: Orville & Wilbur Wright in 1903

4. Who invented Super Computer ?

Answer:

Seymour Cray

5. Who invented Printing Press ?

Answer:

Johannes Gutenberg

6. Who invented Neutron bomb ?

Answer:

Samuel T. Cohen

7. Who invented Biochemistry ?

Answer: Jan Baptista Van Helmont of Belgium in 1648.