1. Who invented Steam Engine ?

Answer: Thomas Savery of Britain in 1698

2. Who invented Super Computer ?

Answer:

Seymour Cray

3. Who invented Transistor ?

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

4. Who invented Safety razor ?

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

5. Who invented paper ?

Answer:

Cai Lun

6. Who invented Vitamin C ?

Answer:

Scottish naval surgeon James Lind in 1747

7. Who invented Bicyle ?

Answer: Kirkpatrick Macmillan of Britain.