1. Who invented Atomic theory ?

Answer: Dalton of Britain in 1803.

2. Who invented Diesel Engine ?

Answer: Rudoff Diesel of Germany in 1895

3. Who invented Transformer ?

Answer:

Ottó Bláthy

4. Who invented Radar ?

Answer:

Sir Robert Watson-Watt

5. Who invented Submarine ?

Answer:

John Philip Holland

6. Who invented CT scan ?

Answer: Hounsfield by Britain in 1973.

7. Who invented Vitamin D ?

Answer:

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