1. Who invented Penicillin ?

Answer: Alexander Fleming of Britain in 1928.

2. Who invented Bleaching Powder ?

Answer: Tennant of Britain in 1798

3. Who invented Radiocarbon ?

Answer:

Willard Libby

4. Who invented Submarine ?

Answer:

John Philip Holland

5. Who invented Computer ?

Answer:

Charles Babbage

6. Who invented Vitamin D ?

Answer:

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

7. Who invented Transistor ?

Answer: Bardeen, Shockley & Britain of U.S.A. in 1948