1. Who invented CT scan ?

Answer: Hounsfield by Britain in 1973.

2. Who invented Vitamin A ?

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

3. Who invented Piano ?

Answer:

Bartolomeo Cristofori

4. Who invented Neon Lamp ?

Answer:

Georges Claude who was a French engineer, chemist and inventor

5. Who invented Steam Engine (Condenser)

Answer: James Watt of Britain in 1765

6. Who invented Vitamin D ?

Answer:

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

7. Who invented Printing Press ?

Answer:

Johannes Gutenberg