1. Who invented Aeroplane

Answer: Orville & Wilbur Wright in 1903

2. Who invented Safety Pin ?

Answer: Walter Hunt of U.S.A. in 1849

3. Who invented DNA Structure ?

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

4. Who invented Logarithms ?

Answer:

John Napier (Scotland) invented Logarithm

5. Who invented Proton ?

Answer:

Ernest Rutherford

6. Who invented Bakelite ?

Answer: Leo H. Baekeland of Belgium in 1907.

7. Who invented Atomic theory ?

Answer: Dalton of Britain in 1803.