1. Who invented Bacteria ?

Answer: Leeuwenhock of Netherlands in 1683

2. Who invented watch ?

Answer:

Peter Henlein invented the first portable time piece in 1504

3. Who invented Stethoscope ?

Answer: Laennec of French in 1819.

4. Who invented DNA Structure ?

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

5. Who invented google ?

Answer:

Larry Page

6. Who invented Helicopter ?

Answer:

Igor Sikorsky

7. Who invented Optical Fibre ?

Answer:

Indian-born American physicist Narinder Kapany