1. Who invented by Electric Lamp ?

Answer: Thomas Alva Edison of U.S.A. in 1879

2. Who invented Vitamin B1 ?

Answer:

Casimir Funk discovered in 1912

3. Who invented Open Heart Surgery ?

Answer:

Dr. Daniel Hale Williams

4. Who invented Transistor ?

Answer: Bardeen, Shockley & Britain of U.S.A. in 1948

5. Who invented Computer ?

Answer:

Charles Babbage

6. Who invented Vitamin K ?

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

7. Who invented Vitamin A ?

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