1. Who invented Bleaching Powder ?

Answer: Tennant of Britain in 1798

2. Who invented Computer ?

Answer:

Charles Babbage

3. Who invented watch ?

Answer:

Peter Henlein invented the first portable time piece in 1504

4. Who invented Bacteria ?

Answer: Leeuwenhock of Netherlands in 1683

5. Who invented Chemotherapy ?

Answer: Paracelsus of Switzerland

6. Who invented Penicillin ?

Answer: Alexander Fleming of Britain in 1928.

7. Who invented Vitamin A ?

Answer: Mc Collum and M.Davis of U.S.A. in 1913