Easy Tutorial
For Competitive Exams

Who is the only U.S. President to invent and patent something?

Abraham Lincoln
Theodore Roosevelt
Thomas Jefferson
Rutherford B. Hayes
Additional Questions

What invention is credited to the Russian born American inventor Vladimir Kosma Zworykin?

Answer

Benjamin Franklin was a prolific inventor. He invented the lightning rod, the Franklin stove, studied electricity, discovered the Gulf Stream, started the first library, and on and on. Among his many other inventions, what musical instrument did he invent?

Answer

What Thomas Davenport invented?

Answer

What Elisha Otis invented?

Answer

Where was the yo-yo invented?

Answer

For what does the world owe Almon Strowger a debt of gratitude?

Answer

Who is often called the first African-American inventor?

Answer

The first hand glider was designed by...?

Answer

In which decade was the telegraph invented?

Answer

What inspired reflecting road lights to be invented?

Answer
Share with Friends
Privacy Copyright Contact Us