1. Who invented paper ?

Answer:

Cai Lun

2. Who invented by Electric Lamp ?

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

3. Who invented Vitamin B1 ?

Answer:

Casimir Funk discovered in 1912

4. Who invented Vitamin K ?

Answer: Doisy Dam of U.S.A. in 1938.

5. Who invented Ball-Point Pen ?

Answer: John J. Loud of U.S.A. in 1888

6. Who invented google ?

Answer:

Larry Page

7. Who invented HIV ?

Answer: