1. Who invented watch ?

Answer:

Peter Henlein invented the first portable time piece in 1504

2. Who invented Optical Fibre ?

Answer:

Indian-born American physicist Narinder Kapany

3. Who invented Automatic rifle ?

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

4. Who invented Morphine ?

Answer: Friderich Sertumer of Germany in 1805

5. Who invented Helicopter ?

Answer:

Igor Sikorsky

6. Who invented paper ?

Answer:

Cai Lun

7. Who invented Atomic theory ?

Answer: Dalton of Britain in 1803.