1. Who invented Locomotive ?

Answer:

George Stephenson was first to buit steam locomotives.

2. Who invented Radiocarbon ?

Answer:

Willard Libby

3. Who invented Neutron bomb ?

Answer:

Samuel T. Cohen

4. Who invented Automatic rifle ?

Answer: John Browning of U.S.A. in 1918.

5. Who invented Stainless Steel ?

Answer: Harry Brearley of Britain in 1913.

6. Who invented Telescope ?

Answer: Hans Lippershey of Netherlands in 1608.

7. Who invented Logarithms ?

Answer:

John Napier (Scotland) invented Logarithm