1. Who invented Machine Gun ?

Answer:

Helge Palmcrantz, Swedish inventor and industrialist

2. Who invented Computer ?

Answer:

Charles Babbage

3. Who invented Transformer ?

Answer:

Ottó Bláthy

4. Who invented Periodic table ?

Answer:

Dmitri Mendeleev invented Periodic Table

5. Who invented Logarithms ?

Answer:

John Napier (Scotland) invented Logarithm

6. Who invented Chloroform as anaesthetic ?

Answer: James Simpson of Britain in 1847.

7. Who invented Ball-Point Pen ?

Answer: John J. Loud of U.S.A. in 1888