1. Who invented paper ?

Answer:

Cai Lun

2. Who invented Bleaching Powder ?

Answer: Tennant of Britain in 1798

3. Who invented Vaccine of Rabies ?

Answer: Louis Pasteur of France in 1885

4. Who invented Steam Engine ?

Answer: Thomas Savery of Britain in 1698

5. Who invented Morphine ?

Answer: Friderich Sertumer of Germany in 1805

6. Who invented Logarithms ?

Answer:

John Napier (Scotland) invented Logarithm

7. Who invented Electron ?

Answer: Thomson. J of Britain in 1897