1. Who invented Logarithms ?

Answer:

John Napier (Scotland) invented Logarithm

2. Who invented Transistor ?

Answer: Bardeen, Shockley & Britain of U.S.A. in 1948

3. Who invented Laptop ?

Answer:

Adam Osborne in 1981.

4. Who invented Bacteria ?

Answer: Leeuwenhock of Netherlands in 1683

5. Who invented Chloroform as anaesthetic ?

Answer: James Simpson of Britain in 1847.

6. Who invented Neutron ?

Answer:

JAMES CHADWICK in 1932

7. Who invented Blood Transfusion ?

Answer: Jean-Baptiste Denys of France in 1625.