1. Who invented Vitamin A ?

Answer: Mc Collum and M.Davis of U.S.A. in 1913

2. Who invented Circulation of blood ?

Answer: William Harvey of Britain in 1628

3. Who invented Television ?

Answer:

John Logie Baird

4. Who invented Microphone ?

Answer:

Emile Berliner invented the first microphone in 1876.

5. Who invented Vitamin C ?

Answer:

Scottish naval surgeon James Lind in 1747

6. Who invented CT scan ?

Answer: Hounsfield by Britain in 1973.

7. Who invented google ?

Answer:

Larry Page