1. Who invented X-ray ?

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

2. Who invented Nylon ?

Answer:

Wallace Carothers

3. Who invented Aeroplane

Answer: Orville & Wilbur Wright in 1903

4. Who invented Java Language ?

Answer:

James Gosling

5. Who invented Air Conditioning ?

Answer:

Willis Carrier in 1902

6. Who invented Gramophone ?

Answer:

Emile Berliner in 1887.

7. Who invented Aspirin ?

Answer:

Felix Hoffmann invented Aspirin