1. Who invented Air Conditioning ?

Answer:

Willis Carrier in 1902

2. Who invented Bakelite ?

Answer: Leo H. Baekeland of Belgium in 1907.

3. Who invented Floppy disk ?

Answer: IBM in 1970

4. Who invented Automatic rifle ?

Answer: John Browning of U.S.A. in 1918.

5. Who invented Safety razor ?

Answer: King Camp Gillette of U.S.A. in 1903

6. Who invented Telescope ?

Answer: Hans Lippershey of Netherlands in 1608.

7. Who invented Morphine ?

Answer: Friderich Sertumer of Germany in 1805