1. Who invented watch ?

Answer:

Peter Henlein invented the first portable time piece in 1504

2. Who invented Radar ?

Answer:

Sir Robert Watson-Watt

3. Who invented colour television ?

Answer:

Peter Carl Goldmark

4. Who invented Bakelite ?

Answer: Leo H. Baekeland of Belgium in 1907.

5. Who invented Safety Pin ?

Answer: Walter Hunt of U.S.A. in 1849

6. Who invented paper ?

Answer:

Cai Lun

7. Who invented Submarine ?

Answer:

John Philip Holland