1. Who invented Radar ?

Answer:

Sir Robert Watson-Watt

2. Who invented Steam Engine (Piston)

Answer: Thomas Newcomen of Britain in 1712

3. Who invented Optical Fibre ?

Answer:

Indian-born American physicist Narinder Kapany

4. Who invented Penicillin ?

Answer: Alexander Fleming of Britain in 1928.

5. Who invented Vitamin B1 ?

Answer:

Casimir Funk discovered in 1912

6. Who invented paper ?

Answer:

Cai Lun

7. Who invented Aeroplane

Answer: Orville & Wilbur Wright in 1903