1. Who invented paper ?

Answer:

Cai Lun

2. Who invented Penicillin ?

Answer: Alexander Fleming of Britain in 1928.

3. Who invented Computer ?

Answer:

Charles Babbage

4. Who invented Vitamin D ?

Answer:

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

5. Who invented Printing Press ?

Answer:

Johannes Gutenberg

6. Who invented Nylon ?

Answer:

Wallace Carothers

7. Who invented Radiocarbon ?

Answer:

Willard Libby