1. Who invented HIV ?

Answer:

2. Who invented Aeroplane

Answer: Orville & Wilbur Wright in 1903

3. Who invented Relativity Theory ?

Answer: Einstein of Germany in 1905.

4. Who invented Optical Fibre ?

Answer:

Indian-born American physicist Narinder Kapany

5. Who invented Diesel Engine ?

Answer: Rudoff Diesel of Germany in 1895

6. Who invented Neutron ?

Answer:

JAMES CHADWICK in 1932

7. Who invented Stainless Steel ?

Answer: Harry Brearley of Britain in 1913.