1. Who invented Vitamin D ?

Answer:

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

2. Who invented Bleaching Powder ?

Answer: Tennant of Britain in 1798

3. Who invented Neutron ?

Answer:

JAMES CHADWICK in 1932

4. Who invented Open Heart Surgery ?

Answer:

Dr. Daniel Hale Williams

5. Who invented Neutron bomb ?

Answer:

Samuel T. Cohen

6. Who invented CT scan ?

Answer: Hounsfield by Britain in 1973.

7. Who invented google ?

Answer:

Larry Page