1. Who invented Steam Engine ?

Answer: Thomas Savery of Britain in 1698

2. Who invented Aeroplane

Answer: Orville & Wilbur Wright in 1903

3. Who invented Morphine ?

Answer: Friderich Sertumer of Germany in 1805

4. Who invented Vitamin A ?

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

5. Who invented Laser ?

Answer:

Charles H. Townes

6. Who invented Air Conditioning ?

Answer:

Willis Carrier in 1902

7. Who invented Transformer ?

Answer:

Ottó Bláthy