1. Who invented Circulation of blood ?

Answer: William Harvey of Britain in 1628

2. Who invented DNA Structure ?

Answer: Crick(UK), Waston(US), Wilkins(UK) in 1951

3. Who invented Bleaching Powder ?

Answer: Tennant of Britain in 1798

4. Who invented Microphone ?

Answer:

Emile Berliner invented the first microphone in 1876.

5. Who invented Steam Engine (Piston)

Answer: Thomas Newcomen of Britain in 1712

6. Who invented colour television ?

Answer:

Peter Carl Goldmark

7. Who invented Diesel Engine ?

Answer: Rudoff Diesel of Germany in 1895