1. Who invented by Electric Lamp ?

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

2. Who invented Periodic table ?

Answer:

Dmitri Mendeleev invented Periodic Table

3. Who invented Gramophone ?

Answer:

Emile Berliner in 1887.

4. Who invented Vitamin B1 ?

Answer:

Casimir Funk discovered in 1912

5. Who invented Bicyle ?

Answer: Kirkpatrick Macmillan of Britain.

6. Who invented Chemotherapy ?

Answer: Paracelsus of Switzerland

7. Who invented Logarithms ?

Answer:

John Napier (Scotland) invented Logarithm