1. Who invented Printing Press ?

Answer:

Johannes Gutenberg

2. Who invented Optical Fibre ?

Answer:

Indian-born American physicist Narinder Kapany

3. Who invented paper ?

Answer:

Cai Lun

4. Who invented Computer ?

Answer:

Charles Babbage

5. Who invented HIV ?

Answer:

6. Who invented Bleaching Powder ?

Answer: Tennant of Britain in 1798

7. Who invented watch ?

Answer:

Peter Henlein invented the first portable time piece in 1504