1. Who invented Computer ?

Answer:

Charles Babbage

2. Who invented Circulation of blood ?

Answer: William Harvey of Britain in 1628

3. Who invented Bleaching Powder ?

Answer: Tennant of Britain in 1798

4. Who invented Printing Press ?

Answer:

Johannes Gutenberg

5. Who invented Optical Fibre ?

Answer:

Indian-born American physicist Narinder Kapany

6. Who invented CT scan ?

Answer: Hounsfield by Britain in 1973.

7. Who invented Vitamin A ?

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