1. Who invented Calculus ?

Answer: Newton of Britain in 1670.

2. Who invented Vitamin A ?

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

3. Who invented c language

Answer:

Dennis Ritchie

4. Who invented Neutron ?

Answer:

JAMES CHADWICK in 1932

5. Who invented Vitamin C ?

Answer:

Scottish naval surgeon James Lind in 1747

6. Who invented Vitamin K ?

Answer: Doisy Dam of U.S.A. in 1938.

7. Who invented Printing Press ?

Answer:

Johannes Gutenberg