1. Who invented CT scan ?

Answer: Hounsfield by Britain in 1973.

2. Who invented HIV ?

Answer:

3. Who invented Relativity Theory ?

Answer: Einstein of Germany in 1905.

4. Who invented Safety razor ?

Answer: King Camp Gillette of U.S.A. in 1903

5. Who invented Neutron ?

Answer:

JAMES CHADWICK in 1932

6. Who invented google ?

Answer:

Larry Page

7. Who invented Vitamin A ?

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