1. Who invented Aeroplane

Answer: Orville & Wilbur Wright in 1903

2. Who invented Submarine ?

Answer:

John Philip Holland

3. Who invented Relativity Theory ?

Answer: Einstein of Germany in 1905.

4. Who invented Bacteria ?

Answer: Leeuwenhock of Netherlands in 1683

5. Who invented Telescope ?

Answer: Hans Lippershey of Netherlands in 1608.

6. Who invented Java Language ?

Answer:

James Gosling

7. Who invented Refrigerator ?

Answer:

Oliver Evans in 1805