1. Who invented Morphine ?

Answer: Friderich Sertumer of Germany in 1805

2. Who invented Automatic rifle ?

Answer: John Browning of U.S.A. in 1918.

3. Who invented Printing Press ?

Answer:

Johannes Gutenberg

4. Who invented Barometer ?

Answer: Evangelista Torricelli of Italy in 1644

5. Who invented Circulation of blood ?

Answer: William Harvey of Britain in 1628

6. Who invented Vitamin C ?

Answer:

Scottish naval surgeon James Lind in 1747

7. Who invented Submarine ?

Answer:

John Philip Holland