1. Who invented Radar ?

Answer:

Sir Robert Watson-Watt

2. Who invented Hydrogen bomb ?

Answer:

Edward Teller

3. Who invented Bicyle ?

Answer: Kirkpatrick Macmillan of Britain.

4. Who invented watch ?

Answer:

Peter Henlein invented the first portable time piece in 1504

5. Who invented Helicopter ?

Answer:

Igor Sikorsky

6. Who invented Transistor ?

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

7. Who invented Atomic numbers ?

Answer: Moseley of Britain in 1913