1. Who invented DNA Structure ?

Answer: Crick(UK), Waston(US), Wilkins(UK) in 1951

2. Who invented Relativity Theory ?

Answer: Einstein of Germany in 1905.

3. Who invented Vaccine of Rabies ?

Answer: Louis Pasteur of France in 1885

4. Who invented Submarine ?

Answer:

John Philip Holland

5. Who invented Diesel Engine ?

Answer: Rudoff Diesel of Germany in 1895

6. Who invented Refrigerator ?

Answer:

Oliver Evans in 1805

7. Who invented Bicyle ?

Answer: Kirkpatrick Macmillan of Britain.