1. Who invented Laptop ?

Answer:

Adam Osborne in 1981.

2. Who invented Optical Fibre ?

Answer:

Indian-born American physicist Narinder Kapany

3. Who invented watch ?

Answer:

Peter Henlein invented the first portable time piece in 1504

4. Who invented Vitamin D ?

Answer:

Edward Mellanby discovered Vitamin D while researching a disease called rickets in 1922

5. Who invented Computer ?

Answer:

Charles Babbage

6. Who invented Safety razor ?

Answer: King Camp Gillette of U.S.A. in 1903

7. Who invented Hydrogen bomb ?

Answer:

Edward Teller