1. Who invented Barometer ?

Answer: Evangelista Torricelli of Italy in 1644

2. Who invented Bakelite ?

Answer: Leo H. Baekeland of Belgium in 1907.

3. Who invented by Electric Lamp ?

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

4. Who invented Bicyle ?

Answer: Kirkpatrick Macmillan of Britain.

5. Who invented Neutron bomb ?

Answer:

Samuel T. Cohen

6. Who invented Optical Fibre ?

Answer:

Indian-born American physicist Narinder Kapany

7. Who invented Steam Engine (Piston)

Answer: Thomas Newcomen of Britain in 1712