Who is often called the 'first African-American' inventor?
View Answer Report Error Discuss
Who invented the BALLPOINT PEN?
FROZEN FOOD – Who discovered the first practical method of freezing food?
Ralph Samuelson was only 18 when he invented this sporting item in 1922. What was that?
Who invented fuel cells in 1839?
The first effective vaccine against polio was prepared by ?
Who invented Automobiles using gasoline?
Atomic theory was devised by
Aptitude and Reasoning
General Knowledge
Puzzles
Interviews
Technical
Certifications
Exams
Job Roles
True or False
Exams
Login
Sign Up