1. Who invented Nylon ?

Answer:

Wallace Carothers

2. Who invented Periodic table ?

Answer:

Dmitri Mendeleev invented Periodic Table

3. Who invented Vitamin B1 ?

Answer:

Casimir Funk discovered in 1912

4. Who invented Automatic rifle ?

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

5. Who invented Radar ?

Answer:

Sir Robert Watson-Watt

6. Who invented Laser ?

Answer:

Charles H. Townes

7. Who invented Steam Engine (Piston)

Answer: Thomas Newcomen of Britain in 1712