1. Who invented Bacteria ?

Answer: Leeuwenhock of Netherlands in 1683

2. Who invented Diesel Engine ?

Answer: Rudoff Diesel of Germany in 1895

3. Who invented X-ray ?

Answer: W.K. Roentgen of Germany in 1895.

4. Who invented Relativity Theory ?

Answer: Einstein of Germany in 1905.

5. Who invented Radar ?

Answer:

Sir Robert Watson-Watt

6. Who invented Air Conditioning ?

Answer:

Willis Carrier in 1902

7. Who invented Atomic Bomb ?

Answer: J. Robert Oppenheimer of U.S.A. in 1945