1. Who invented Radar ?

Answer:

Sir Robert Watson-Watt

2. Who invented Nylon ?

Answer:

Wallace Carothers

3. Who invented Locomotive ?

Answer:

George Stephenson was first to buit steam locomotives.

4. Who invented Helicopter ?

Answer:

Igor Sikorsky

5. Who invented Morphine ?

Answer: Friderich Sertumer of Germany in 1805

6. Who invented Vitamin K ?

Answer: Doisy Dam of U.S.A. in 1938.

7. Who invented Stethoscope ?

Answer: Laennec of French in 1819.