1. Who invented X-ray ?

Answer: W.K. Roentgen of Germany in 1895.

2. Who invented Vitamin D ?

Answer:

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

3. Who invented Transformer ?

Answer:

Ottó Bláthy

4. Who invented google ?

Answer:

Larry Page

5. Who invented Vitamin K ?

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

6. Who invented Computer ?

Answer:

Charles Babbage

7. Who invented Vitamin A ?

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