1. Who invented Aeroplane

Answer: Orville & Wilbur Wright in 1903

2. Who invented CT scan ?

Answer: Hounsfield by Britain in 1973.

3. Who invented Stainless Steel ?

Answer: Harry Brearley of Britain in 1913.

4. Who invented Gramophone ?

Answer:

Emile Berliner in 1887.

5. Who invented Atomic numbers ?

Answer: Moseley of Britain in 1913

6. Who invented Steam Engine (Condenser)

Answer: James Watt of Britain in 1765

7. Who invented paper ?

Answer:

Cai Lun