1. Who invented Steam Engine (Condenser)

Answer: James Watt of Britain in 1765

2. Who invented Periodic table ?

Answer:

Dmitri Mendeleev invented Periodic Table

3. Who invented Bacteria ?

Answer: Leeuwenhock of Netherlands in 1683

4. Who invented Stethoscope ?

Answer: Laennec of French in 1819.

5. Who invented Penicillin ?

Answer: Alexander Fleming of Britain in 1928.

6. Who invented Transformer ?

Answer:

Ottó Bláthy

7. Who invented Atomic numbers ?

Answer: Moseley of Britain in 1913