1. Who invented Vitamin A ?

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

2. Who invented Steam Engine ?

Answer: Thomas Savery of Britain in 1698

3. Who invented Barometer ?

Answer: Evangelista Torricelli of Italy in 1644

4. Who invented colour television ?

Answer:

Peter Carl Goldmark

5. Who invented Bicyle ?

Answer: Kirkpatrick Macmillan of Britain.

6. Who invented Diesel Engine ?

Answer: Rudoff Diesel of Germany in 1895

7. Who invented Bleaching Powder ?

Answer: Tennant of Britain in 1798