1. Who invented Steam Engine (Condenser)

Answer: James Watt of Britain in 1765

2. Who invented Biochemistry ?

Answer: Jan Baptista Van Helmont of Belgium in 1648.

3. Who invented HIV ?

Answer:

4. Who invented X-ray ?

Answer: W.K. Roentgen of Germany in 1895.

5. Who invented Chloroform as anaesthetic ?

Answer: James Simpson of Britain in 1847.

6. Who invented Vitamin C ?

Answer:

Scottish naval surgeon James Lind in 1747

7. Who invented Floppy disk ?

Answer: IBM in 1970