1. Who invented watch ?

Answer:

Peter Henlein invented the first portable time piece in 1504

2. Who invented Diesel Engine ?

Answer: Rudoff Diesel of Germany in 1895

3. Who invented Logarithms ?

Answer:

John Napier (Scotland) invented Logarithm

4. Who invented Safety razor ?

Answer: King Camp Gillette of U.S.A. in 1903

5. Who invented Bleaching Powder ?

Answer: Tennant of Britain in 1798

6. Who invented Refrigerator ?

Answer:

Oliver Evans in 1805

7. Who invented Hydrogen bomb ?

Answer:

Edward Teller