1. Who invented Barometer ?

Answer: Evangelista Torricelli of Italy in 1644

2. Who invented Nylon ?

Answer:

Wallace Carothers

3. Who invented Atomic numbers ?

Answer: Moseley of Britain in 1913

4. Who invented Transformer ?

Answer:

Ottó Bláthy

5. Who invented Steam Engine ?

Answer: Thomas Savery of Britain in 1698

6. Who invented by Electric Lamp ?

Answer: Thomas Alva Edison of U.S.A. in 1879

7. Who invented Chloroform as anaesthetic ?

Answer: James Simpson of Britain in 1847.