1. Who invented Air Conditioning ?

Answer:

Willis Carrier in 1902

2. Who invented colour television ?

Answer:

Peter Carl Goldmark

3. Who invented Vitamin K ?

Answer: Doisy Dam of U.S.A. in 1938.

4. Who invented Piano ?

Answer:

Bartolomeo Cristofori

5. Who invented Vitamin A ?

Answer: Mc Collum and M.Davis of U.S.A. in 1913

6. Who invented Optical Fibre ?

Answer:

Indian-born American physicist Narinder Kapany

7. Who invented Aspirin ?

Answer:

Felix Hoffmann invented Aspirin