1. Who invented Vitamin K ?

Answer: Doisy Dam of U.S.A. in 1938.

2. Who invented Vitamin D ?

Answer:

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

3. Who invented Java Language ?

Answer:

James Gosling

4. Who invented Optical Fibre ?

Answer:

Indian-born American physicist Narinder Kapany

5. Who invented Bleaching Powder ?

Answer: Tennant of Britain in 1798

6. Who invented Morphine ?

Answer: Friderich Sertumer of Germany in 1805

7. Who invented Logarithms ?

Answer:

John Napier (Scotland) invented Logarithm