1. Who invented Safety Pin ?

Answer: Walter Hunt of U.S.A. in 1849

2. Who invented Nylon ?

Answer:

Wallace Carothers

3. Who invented Television ?

Answer:

John Logie Baird

4. Who invented Atomic Bomb ?

Answer: J. Robert Oppenheimer of U.S.A. in 1945

5. Who invented Vitamin A ?

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

6. Who invented Laptop ?

Answer:

Adam Osborne in 1981.

7. Who invented Circulation of blood ?

Answer: William Harvey of Britain in 1628